The best statement that describes the features used to classify an organism as a member of domain bacteria is A. Unicellular, lacking a nuclear envelope and membrane bound organelles, contains ribosomes but lacks introns best describes the features used to classify an organism as a member of domain bacteria.
The classification of organisms into different domains is based on various characteristics, including cellular structure, biochemistry, and genetic information.
In the case of bacteria, which belong to the domain Bacteria, the following features are used to classify an organism:
Unicellular: Bacteria are single-celled organisms and lack the complex organization and differentiation of cells found in multicellular organisms.Lacking a nuclear envelope: Unlike eukaryotes (organisms in the domain Eukarya), bacteria do not have a nucleus enclosed by a membrane. Instead, their genetic material is located in a region of the cytoplasm known as the nucleoid.Lack of membrane-bound organelles: Bacteria also lack the membrane-bound organelles found in eukaryotes, such as mitochondria, chloroplasts, and the endoplasmic reticulum.Contains ribosomes: Bacteria have ribosomes, which are the cellular structures responsible for protein synthesis.Lacks introns: Unlike eukaryotes, bacteria do not have introns, which are non-coding regions of DNA that are spliced out of the mRNA before it is translated into protein.Based on these characteristics, option A best describes the features used to classify an organism as a member of domain Bacteria.
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Based on what you've read, answer the following questions.
1. Girls generally begin their growth spurt with a major hormonal shift called the
2. The hormone that causes the growth of pubic and underarm hair in girls is
3. Most
don't understand that adults have experienced the same kinds of things
they re experiencing.
4. According to Erik Erikson, adolescents face the crisis of
5. Most people express more than
identity.
6. What factor--parents, peer groups, or youth culture has the greatest effect on the educational and vocational choices of teenagers?
7. Two eating disorders associated with young women and adolescents are
and
8. The abused substances that are most used by adolescents are
and
9. Most sexually transmitted diseases are
Explanation:
secondary character structure
Which of the following BEST describes how ATP synthase converts the potential energy of the proton gradient to the chemical energy of ATP? Do protons flow through the F0 or F1?
A. Kinetic energy from the flow of protons is stored in a new electrochemical gradient within the F0 subunit. The potential energy of the electrochemical gradient, in turn, is converted to kinetic energy in the F1 subunit and used to catalyze ATP synthesis.
B. The flow of protons through the F0 subunit oxidizes the F1 subunit, which allows ADP to be reduced to ATP.
C. Kinetic energy from the flow of protons is converted to the kinetic energy of rotation of the F0 subunit; the rotation of the F0 subunit leads to rotation of the F1 subunit, which can then catalyze ATP synthesis.
D. None of the other answer options is correct.
E. The flow of protons through the F0 subunit reduces the F1 subunit, which allows ADP to be oxidized to ATP.
The best description of how ATP synthase converts the potential energy of the proton gradient to the chemical energy of ATP and protons flow through the F0 or F1 is kinetic energy from the flow of protons is converted to the kinetic energy of rotation of the F0 subunit; the rotation of the F0 subunit leads to rotation of the F1 subunit, which can then catalyze ATP synthesis.
Thus, the correct option is C.
The dephosphorylаtion of аdenosine triphosphаte (АTP) provides energy for mаny biochemicаl reаctions. АTP is primаrily produced by the enzyme АTP Synthаse. Synthаses аre found in the inner mitochondriаl membrаnes аnd the chloroplаst thylаkoid membrаnes of eukаryotes, аs well аs in prokаryotic plаsmа membrаnes. Like hydroelectric turbines, АTP synthаse components rotаte in response to the proton flow, аnd this rotаtionаl energy is then coupled to АTP synthesis.
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Use the information above to write a weather forecast for 8am, Friday May 8, 2020.
Date May 8, 2020
Predicted
Temperature
Predicted
Relative
Humidity
Predicted
Cloud Cover
Predicted
Precipitation
This is accomplished by checking at a substantial amount of observational data, such as surface observations, satellite images, radar, radiosonde, upper-air, wind profilers, aircraft observations, river gauges, and just gazing outdoors.
What is Weather Forecast?Utilizing science and technology to forecast the atmospheric conditions at a certain area and time is known as weather forecasting.
For millennia, people have made informal predictions about the weather, and since the 19th century, they have made formal ones and because you did not provide complete information about the data, a prediction cannot be made, but you have a better idea of how weather forecasting is done.
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Which of the following agricultural practices is recommended because it can improve the environment? Multiple Choice Expanding farmland into forests and grasslands o O Applying irrigation water directly to the roots of crops o C) Using chemical methods to control crop pests o Raising more corn-fed beef and pork o
The following agricultural practices is recommended because it can improve environment : applying irrigation water directly to roots of crops.
What is the agricultural practices to improve environment?Planting variety of crops can have many benefits including healthier soil and improved pest control. Crop diversity practices include intercropping and complex multiyear crop rotations. When agricultural operations are sustainably managed, then they can preserve and restore critical habitats, help in protecting watersheds and improve soil health and water quality.
Pillars of Good Agricultural Practices are:- economic viability, environment sustainability, social acceptability and food safety and quality.
Practices in Sustainable Agriculture are Organic Farming, Agroforestry, Natural Farming and others.
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Escherichia coli is a Gram Negative rod-shaped bacterium. Which the following statements correctly describe it? The bacterial cells have flagella on each end of the cell. The bacterium's flagella are made of flagellin. The bacterial cells have a group of flagella on one end of the cell. This organism moves by whipping it's flagella back and forth. There must be a cell membrane fully surrounding the flagella.
Lower intestines of warm-blooded organisms typically include the bacteria Escherichia coli (E. coli). Some E. coli strains, however, have the potential to cause food poisoning that is fatal. Shiga toxin is produced by E. coli.
Which two facts regarding E. coli are interesting?Escherichia coli, sometimes known as E. coli, is a species of bacteria that generally lives in the intestines of humans and some animals. The majority of E. coli strains are safe and, like the beneficial bacteria in probiotics, can even maintain the health of your digestive system.
What does E. coli look like under a microscope?Gram-negative Escherichia bacteria have a rod-like appearance under the microscope with a short tail. It is widespread in the natural world (Brooker 2008).
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Amir carried out an experiment into rates of decay. He used two pots of dead leaves. He added several woodlice to pot 1 and nothing to pot 2. In which of the pots would you expect the leaves to decay fastest?
Answer:
Pot 1 would likely have faster decay rate as the woodlice would increase the rate of decomposition by breaking down the leaves and accelerating the process of decay.
Fill in the blank
The female is born with about two million oocytes halted in Prophase 1,
only 400 of which will mature into ovum. within her lifetime-usually,
only one each month. On about the 14th day of the menstrual cycle, the egg
is released from a follicle on the surface of the female gonad or
.
At ovulation fimbriae move the egg into the
During intercourse sperm are deposited in the
which leads to the cervix the muscular opening of the
once inside they travel to the fallopian tubes in
If no fertilization occurs, the egg
search of the
disintegrates in 13-15 days, the uterine lining detaches and
Menstruation occurs. Then the cycle begins again.
is released from a follicle on the surface of the female gonad or ovary.
At ovulation fimbriae move the egg into the fallopian tube.
During intercourse sperm are deposited in the vagina,
which leads to the cervix, the muscular opening of the uterus;
once inside they travel to the fallopian tubes in search of the egg.
What is ovulation?
Ovulation is the release of a mature egg from the ovary. It usually occurs once every menstrual cycle, usually around day 14 of a 28-day cycle. The egg is released into the fallopian tube, where it can be fertilized by sperm. If the egg is not fertilized, it will pass through the uterus and out of the body during menstruation.
The female is born with about two million oocytes halted in Prophase 1,
only 400 of which will mature into ovum within her lifetime-usually,
only one each month. On about the 14th day of the menstrual cycle, the egg
is released from a follicle on the surface of the female gonad or ovary.
At ovulation fimbriae move the egg into the fallopian tube.
During intercourse sperm are deposited in the vagina,
which leads to the cervix, the muscular opening of the uterus;
once inside they travel to the fallopian tubes in search of the egg.
If no fertilization occurs, the egg disintegrates in 13-15 days,
the uterine lining detaches and menstruation occurs. Then the cycle begins again.
Therefore, ovary, fallopian tube, vagina, uterus, egg are the correct answer.
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Nearly all bacteria contain peptidoglycan. Review the structure of peptidoglycan by selecting the correct characteristics listed below. All bacteria use a peptide interbridge to connect the sugar strands Contains a tetrapeptide that extends from N-acetylglucosamine (NAG) Contains D-amino acids not found in proteins Peptidoglycan is a strong and rigid structure Polymer of alternating N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)
The correct statements about the structure of peptidoglycan are: Contains D-amino acids not found in proteins; Polymer of alternating N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM).
Peptidoglycan belongs to the category of polysaccharides consisting of sugar and amino acids linked together. It forms a very essential component of cell wall of the bacteria. The cross-links make the survival of bacteria possible.
D-amino acids are the stereo-amino acids that have their amino group towards the right side in configuration. The D- amino acids are particularly important for the physiology of microorganisms. The most commonly found amino acids are: D-alanine, D-glutamic acid and D-aspartic acid.
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What are ecosystem services?
Question 40 options:
a system of trade for nature products
services that are valuable only to humans
non-essential processes of nature
life-supporting ecological processes
Answer:
life supporting ecological processes
A researcher studying the evolutionary relationship among five primate species obtained data from a sequence of mitochondrial DNA (mtDNA) from a representative individual of each species. The researcher then calculated the percent divergence in the sequences between each pair of primate species (Table 1).
(a) Based on fossil data, the researcher estimates that humans and their most closely related species in the data set diverged approximately seven million years ago. Using these data, calculate the rate of mtDNA percent divergence per million years between humans and their most closely related species in the data set. Round your answer to two decimal places.
(b) Using the data in the table, construct a cladogram on the template provided. Provide reasoning for the placement of gibbons as the out-group on the cladogram.
(c) On the cladogram, draw a circle around all of the species that are descended from the species indicated by the node within the square.
Gibbon
Please show all steps, this is a very confusing question, thanks
a. Using the data, the rate of mtDNA percent divergence per million years between humans and their most closely related species in the data set is 1.25.
b. A cladogram on the template provided:
HumanChimpanzeeGorillaOrangutanGibbonReasons for the placement of gibbons as the out-group on the cladogram:
Gibbon mtDNА is the leаst similаr (to аll of the other species)/most different (from аll of the other species). Gibbon mtDNА is the most divergent (from аll of the other species).c. On the cladogram, a circle around all of the species that are descended from the species indicated by the node within the square: Circle species 1, 2, and 3, as numbered from the top.
Determine the rаte of mtDNА percent divergence:
From the dаtа given the most closely relаted specie is Chimpаnzee (8.8 sequence difference).
Note: Given thаt this divergence took plаce seven million yeаrs from now
he rаte of mtDNА percent divergence per 1 millions yeаrs
= 8.8 / 7
= 1.25
Your question is incomplete, but most probably your full question can be seen in the Attachment.
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Please help!! What are some commonalities between baboon friendships and human friendships? What are some differences
Answer:
genetic similarity of 94%
Which of the following is the right to reveal one's own sexuality with due respect to the rights of others?the right to freedom of thought, opinion, and expression
The right to reveal one's own sexuality is often referred to as A: "the right to sexual orientation and gender identity", and it is considered an aspect of the right to privacy.
This right allows individuals to express their sexual orientation and gender identity freely, without fear of discrimination or persecution. The right to sexual orientation and gender identity is protected by international human rights law, and it is considered an essential component of the right to freedom of thought, opinion, and expression.
"
Complete question
Which of the following is the right to reveal one's own sexuality with due respect to the rights of others?
A: the right to sexual orientation and gender identity
B: the right to hide sexual orientation and gender identity
"
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Which statement shows why lethal genes can be maintained within a gene pool.
they can be passed on as recessive trait in a heterozygous individual
they are expressed before the individual reaches the age of reproduction
they are always dominant
they are only expressed in the female organism
They can be maintained in a gene pool by heterozygous carriers when the allele is recessive and the individuals reproduce.
What is a heterozygous example?If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.
Are heterozygous dominant or recessive?An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
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Which type of study collects data in the natural world, without manipulating the subject of study?
Question 7 options:
theoretical
experimental
observational
randomized
Answer:
ranfamonized.
Explanation:
In a population of lizards, allele T (TT and Tt) codes for long tails. The frequency of allele t (tt) which codes for short tails is 60%. In this population, it was found that having a longer tail tricked the predators into thinking it was a snake and scared them away, which of the following is most likely to occur over time.
Question 20 options:
the frequency of the two alleles will change until they both equal 50%
there will be no change in frequency since T is dominant
the frequency of T will decrease since it is dominant
the frequency of T will increase, and t will decrease
Answer:
The frequency of T will decrease since it is dominant
Explanation:
Since having a long tail provides a survival advantage, individuals with the T allele are more likely to survive and reproduce, passing on their T allele to their offspring. As a result, over time, the frequency of the T allele is likely to increase, and the frequency of the t allele will decrease.
The fact that T is dominant does not affect the frequency of the two alleles in the population, but it does determine the physical expression of the trait in individuals that have at least one T allele.
Amniocentesis is a procedure for
obtaining fetal cells in a sample from the fluid surrounding the fetus.
testing the mother's blood for a protein associated with spina bifida.
obtaining a sample of the fetal part of the placenta.
testing the mother's blood for an excess of phenylalanine, indicating phenylketonuria (PKU).
Amniocentesis is a procedure for obtaining fetal cells in a sample from the fluid surrounding the fetus.
A medical procedure called amniocentesis involves taking a small sample of the fluid surrounding a developing child in the womb (amniotic fluid). Cells from the fetus are present in the fluid, which can be used to test for certain genetic diseases and chromosomal abnormalities.
The treatment typically lasts 30 minutes and is carried out between the 15th and 20th weeks of pregnancy. The uterus is reached through the abdominal wall, and a tiny amount of amniotic fluid is drawn out. The fluid is subsequently taken to a lab for analysis.
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as temperatures drop, membrane fluidity decreases. which of the following changes to phospholipids will help maintain correct bacterial membrane fluidity under cold temperatures?
An increase in unsaturated fatty acids will help maintain correct bacterial membrane fluidity under cold temperatures.
Bacteria are defined as organisms with circular structures made up of their genetic material. These organisms can vary in shape, with some having a spherical shape and others having a lengthier shape. These minuscule organisms exist. Increased unsaturated fatty acid attachments to glycerol molecules in the structure of phospholipids preserve the membrane's fluidity in cold temperatures. Due to their double bonds, these fatty acids are resistant to compression at low temperatures.
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As temperatures drop, membrane fluidity decreases. Which of the following changes to phospholipids will help maintain correct bacterial membrane fluidity under cold temperatures?
a. formation of a lipid monolayer
b. an increase in the length of the fatty acid tails
c. an increase in unsaturated fatty acids
d. an increase in saturated fatty acids
e. a switch from ester linkages between fatty acids and glycerol to ether linkages
This type of reaction combines two smaller molecules (such as two amino acids) to form a larger one.A. phosphatidylcholineB. condensationC. phosphodiester bondD. Pectin
The type of reaction combines two smaller molecules (such as two amino acids) to form a larger one condensation.
What is condensation reaction?Condensation reaction is a type of chemical reaction where two smaller molecules combine to form a larger one, resulting in the elimination of a smaller molecule, typically water. This process is also known as a dehydration reaction, as it involves the removal of water from the reacting molecules. Condensation reactions are vital in the formation of macromolecules, such as carbohydrates, proteins, and nucleic acids, and play a crucial role in many biological processes. They are also commonly used in synthetic organic chemistry for the synthesis of more complex molecules, such as polymers and drugs. The reverse of a condensation reaction is called hydrolysis, which involves the breaking of a larger molecule into smaller ones with the addition of water.
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what is considered to be the source for new alleles
Answer:
Mutation
Explanation: Mutation is the ultimate source of new alleles in plant pathogen populations.
Planning and Creating a Presentation In this activity, you will use presentation software to create a presentation of 15 to 20 slides explaining your arguments in support of or against the following statements: AIDS continues to be a global health crisis. AIDS still meets the definition of a pandemic. Your claims should be supported by scientifically complete evidence. Follow the steps provided to research, plan, and create your presentation. This guide about the research process can help. Part A: Ask Questions Begin by creating a list of questions to guide your research and help you form a convincing argument. Your presentation should answer some of these questions: What is the definition of a pandemic? How does a pandemic differ from an endemic or epidemic? What is the life cycle of the HIV virus once it enters the body? How does the genetic code of the virus change? How does HIV affect the body? How do people become infected with HIV? How does AIDS develop from an HIV infection? What are the current infection rates of HIV across the globe? Where is HIV/AIDS most prevalent? What treatments are currently available for HIV/AIDS? Do some regions of the world have better access to treatments than others? What is the average life expectancy for someone with HIV? Does life expectancy differ around the globe? Now write four additional questions about HIV/AIDS that could help strengthen your argument in the presentation. Part B: Find Credible Sources When designing a science presentation, look for credible sources. Science doesn’t show bias, but humans do. Avoid sites and articles that provide facts without citing proper scientific evidence. You must be able to identify reliable sites so that the data in your presentation is credible. Use sources that end in .gov, such as CDC.gov. These government sites are reliable sources. You can also use sites ending in .edu. They are usually trustworthy, but sometimes students, not scientists, write content for .edu websites. Always identify the source’s author before proceeding. Some .org and .com sites are credible, but it’s important to verify their authenticity. When reviewing a source, ask these questions: Who is the author? Is this person an HIV or AIDS expert? What is the document’s purpose? Does the document state facts that scientists can prove with evidence? Are there opinions in the document? How old is the document? Do other credible sources support the statements in the document? Search for credible websites and note the information they contain. Write down two sources that you will use for your presentation, and cite them using Modern Language Association (MLA) citation methods. Part C: Take Notes In a separate location, take notes from the sources you have identified. The notes will provide details for your presentation. While taking notes from texts and websites, use these reading strategies. In the space provided, write four pieces of information that you intend to use in your presentation. Part D: Organize Your Information After you’ve gathered research and answered all your questions, create an outline in the answer space. Following these guidelines for writing a five-paragraph essay may help you structure your outline. Be sure to account for the claim you’re making in your introduction, and include a works cited page at the end with the authors and websites you consulted. Part E: Select Audio and Video An audiovisual presentation uses pictures and words to clearly present information. These tips will help you effectively build your presentation: Limit text on your slides: Insert key words or phrases that highlight your points instead of typing your entire speech on the slide. When possible, use pictures instead of words: Use representative figures such as pictures, graphs, and charts to depict information or evidence rather than using huge blocks of text. Fill in your speaker’s notes: Presentation software includes a notes section where you can add speaker’s notes for your own reference. In this section, you can cover all the details you want to talk without showing them on your slides. Your speaker’s notes should be clear and coherent enough so that someone else could deliver the presentation to an audience. You must complete your speaker’s notes to get full credit for the assignment. List two to three audio, video, or photo resources that you wish to use in your presentation and paste them in the provided space. Part F: Create and Deliver Your Presentation Use your outline and the materials you’ve collected to create your presentation. It should contain 15 to 20 slides. Be sure to proofread and revise your writing to catch any errors in grammar, spelling, logic, or cohesion. Remember that you must add speaker’s notes as well as a works cited page at the end.
don't spam.
Part A: Additional Questions
How has the global response to the HIV/AIDS pandemic changed over the years? What are the current efforts being made to prevent the spread of HIV/AIDS globally? What challenges are still faced in providing access to HIV/AIDS treatments and care in different regions of the world?What is the HIV/AIDS about?Part B: Credible Sources
Centers for Disease Control and Prevention (CDC.gov) World Health Organization (WHO.int)Citation:
CDC. Centers for Disease Control and Prevention. https://www.cdc.gov/.WHO. World Health Organization. https://www.who.int/.Part C: Notes
HIV/AIDS is caused by the Human Immunodeficiency Virus (HIV). HIV weakens the immune system, making it difficult for the body to fight off infections and diseases. Global HIV/AIDS statistics show that 38 million people are currently living with the virus. The majority of people with HIV/AIDS live in sub-Saharan Africa.Part D: Outline
I. Introduction
Definition of a pandemic Explanation of the ongoing global health crisis of AIDS Thesis statement: Despite advancements in treatments and care, AIDS continues to be a global health crisis and meets the definition of a pandemic.II. Body
A. Definition and Explanation of a Pandemic
Explanation of how AIDS meets the definition of a pandemic
B. The Life Cycle of HIV
Explanation of how HIV affects the body
Discussion of the genetic code of the virus
C. Global Prevalence of HIV/AIDS
Current infection rates of HIV across the globe
Discussion of where HIV/AIDS is most prevalent
D. HIV/AIDS Treatments and Access
Overview of available treatments
Discussion of access to treatments in different regions of the world
III. Conclusion
Recap of main points
Reiteration of thesis statement
Final thoughts on the ongoing global health crisis of AIDS
IV. Works Cited
List of authors and websites consulted, cited using MLA citation methods.
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across multiple species, from prarie dogs to birds to humans included, which of the following universal acts does dr. wesch cite as a survival strategy
Dr. Wesch cites play as a universal act that serves as a survival strategy across multiple species, including prairie dogs, birds, and humans.
In his research, Dr. Wesch highlights the importance of play as a survival strategy across different species, from prairie dogs and birds to humans. Play is seen as a crucial activity for individuals to develop essential skills and abilities that are essential for survival and adaptation.
This can include physical coordination and strength, as well as problem-solving, social skills, and cognitive development. Play also serves as a way to reduce stress and build relationships, both of which are important for overall health and well-being. By examining play across multiple species, Dr. Wesch highlights its universality and importance as a survival strategy.
The question is incomplete, hence the answer is general.
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During transcription, the sequence of the primary transcript (.e., the new produced RNA) matches (Select all that apply): the sense strand, but Tis replaced with U. the nonsense stand, but T is replaced with U. the non-template strand, but Tis replace with U. the template strand, but T is replaced with U.
To produce a major transcript, the gene must first be completely replicated. This involves both exons and introns. The remaining exons are then linked to the major transcript of the mRNA .
What is in the nuclear transcript?RNA polymerase I (Pol I), which solely transcribes ribosomal RNA (with the exception of 5S rRNA), RNA polymerase II (Pol II), which also transcribes mRNA and noncoding RNAs, and RNA polymerase III (Pol III), which also generates tRNAs and 5S rRNA, are all involved in nuclear transcription.
A primary transcript, a single-stranded RNA product made from DNA, is processed to create a variety of mature RNA products, including mRNAs, tRNAs, and rRNAs.
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which of the following are required in order for natural selection to operate on a trait? select all that apply: -the trait does not have a genetic component -there is variation in the trait in the population -the trait affects the ability of the individual to reproduce -the trait can be passed down from parents to offspring -the population size must be large -there is no mutation in the trait
The following are required in order for natural selection to operate on a trait:
-there is variation in the trait in the population
-the trait affects the ability of the individual to reproduce
-the trait can be passed down from parents to offspring
What is trait?A phenotypic trait is an evident, observable, and quantifiable property of an organism; it is the visible expression of genes. A phenotypic characteristic is anything like a particular hair color or eye color. A trait is a genetically determined attribute or condition. It is the trait inherited from the parent by the offspring.
Here,
For natural selection to operate on a trait, there must be variation in the trait within a population, and the trait must affect an individual's ability to reproduce and be passed down from parents to offspring. Whether the trait has a genetic component or not, and whether the population size is large or not, is not a requirement for natural selection to operate on the trait.
However, mutation can play a role in generating new variation in a trait and can impact the operation of natural selection.
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Which of the following extremophiles might researchers most likely use as a model for the earliest organisms on Earth? A) an anaerobic archaean species B) an archaean capable of surviving in the polar ice caps C) a bacterium that thrives in a highly acidic environment D) a bacterium found on another planet or moon
Researchers are most likely to use: (A) an anaerobic archaean species as a model for the earliest organisms on Earth.
Archaea are a group of single-celled microorganisms that are distinct from bacteria and eukaryotes. They are capable of surviving in a wide range of extreme environments, including those with high temperatures, high salt concentrations, and high acidity. However, anaerobic archaea, which are capable of surviving in the absence of oxygen, are of particular interest as models for the earliest organisms on Earth because the atmosphere and oceans of the early Earth were likely anaerobic, or lacked significant levels of oxygen. In conclusion, the most likely candidate for a model for the earliest organisms on Earth would be an anaerobic archaean species, which can survive in an oxygen-free environment and are thought to be representative of the conditions that existed on the early Earth.To know more about archeans visit:
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heart disease is an example of a multifactorial illness. which of the following does not support this statement?
The statement that heart disease is an example of a multifactorial illness is supported by the fact that it is caused by a combination of genetic and environmental factors.
The statement does not support the idea that random error in the formation of ovum or sperm is the cause of heart disease, as this is not a factor in the development of the disease.
Additionally, certain medications can also reduce the risk of heart disease, and genetic testing can help identify individuals at a higher risk of developing the disease.
Complete questions:
Heart disease is an example of a multifactorial illness. Which of the following does not support this statement?
A)Random error in the formation of ovum or sperm causes heart disease
B)I will eat my meals on time and limit myself to one snack daily.
C)Clinical studies attempt to establish cause-and-effect relationships.
D)Focus on promoting health for older individuals.
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Lipids are a unique nutrient group, differing significantly from carbohydrates and proteins. All of the following are correct statements about lipids EXCEPT:A.) Lipids do not dissolve readily in water.B) Lipids yield more than twice as many kilocalories per gram as carbohydrates or proteins.C)Humans need very little fat in their diets to maintain health.D) Phospholipids are the most abundant type of lipids found in the body and in foods.
The information on lipids, carbs, and proteins in diets is incorrect; phospholipids are the most prevalent type of lipids present in the body.
What distinguishes lipids from other nutrients?Lipids do not form long sequences made up of identical or repeating smaller units like the other macromolecules do, nor are they soluble in water like the other macromolecules. Triglycerides, which are molecules that make up the fats you eat, are made up of three fatty acids bound to a glycerol.
Which of the following claims about lipids is untrue?The solution is d. Fatty acids are present in all lipids. Choice (d) is the claim that is untrue: "All lipids contain fatty acids." Fatty acid molecules are not present in all lipids.
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Answer: The information on lipids, carbs, and proteins in diets is incorrect; phospholipids are the most prevalent type of lipids present in the body.What distinguishes lipids from other nutrients?Lipids do not form long sequences made up of identical or repeating smaller units like the other macromolecules do, nor are they soluble in water like the other macromolecules. Triglycerides, which are molecules that make up the fats you eat, are made up of three fatty acids bound to a glycerol.Which of the following claims about lipids is untrue?The solution is d. Fatty acids are present in all lipids. Choice (d) is the claim that is untrue: "All lipids contain fatty acids." Fatty acid molecules are not present in all lipids.
Explanation:
What is Reproduction?
Answer:
Reproduction is the biological process by which organisms produce new individuals of the same species. It is a fundamental characteristic of life, and is essential for the survival and continuation of a species. Reproduction can occur through two main methods: sexual reproduction and asexual reproduction.
In sexual reproduction, two individuals (usually of different sexes) combine their genetic material to produce offspring. This typically involves the fusion of male and female reproductive cells (sperm and egg) during fertilization. The resulting offspring have a unique combination of genetic traits inherited from both parents.
In asexual reproduction, a single individual can produce offspring without the involvement of another individual. This can occur through various methods such as budding, fragmentation, or parthenogenesis, depending on the specific organism.
Reproduction can also be divided into two other categories: primary reproduction and secondary reproduction. Primary reproduction refers to the process of producing the first generation of offspring, while secondary reproduction refers to the process of producing subsequent generations.
Reproduction is important for the survival and continuation of a species. It allows populations to grow and adapt to changing environmental conditions, and helps to maintain genetic diversity within a species
Explanation:
Answer:
Reproduction is the production of offspring. There are two main forms: sexual and asexual reproduction. In sexual reproduction, an organism combines the genetic information from each of its parents and is genetically unique. In asexual reproduction, one parent copies itself to form a genetically identical offspring.
A negative result of fertilizers in a pond is the production of algae blooms.
True or false?
A negative result of fertilizers in a pond is the production of algae blooms is a true statement, because it increases excess nutrients from fertilizer.
How algae blooms developed?Algal blooms, which can be very pronounced, are brought on by an excess of nutrients from fertilizer, wastewater, and stormwater runoff, which also happens to coincide with a lot of sunlight, warm temperatures, and shallow, slowly moving water.
Algae blooms can happen when several favorable environmental factors allow for a lot of algal growth.
Therefore, it is a true statement.
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According to Dr. Zeder, sheep were likely domesticated via the:A. Commensal pathwayB. Prey pathwayC. Directed domestication pathway
According to Dr. Zeder, sheep were likely domesticated via the directed domestication pathway.
Thus, the correct option is C.
There аre three pаthwаys described for domesticаtion: commensаl, prey, аnd direct pаthwаys according to Zeder.
In the commensаl pаthwаy, the wild аnimаls were аttrаcted to аnthropogenic hаbitаts, mаinly for humаn food wаste or smаll prey, estаblishing а commensаl relаtionship with humаns. Dogs, cаts, or chickens аre some of the species thаt followed this pаthwаy. In the prey pаthwаy, humаns stаrt hunting some species like pigs аnd cаttle for their meаt in response to depletion of the locаl stock of these аnimаls. Over time, these gаme mаnаgement strаtegies developed into controlled breeding of these species. In the direct pаthwаy, humаns cаptured wild аnimаls (horses, donkeys, sheep аnd cаmelids) to obtаin some resources by controlling their movements, their nutrition, аnd reproduction, which leаd to а drаmаtic bottleneck.For more information about the direct pаthwаy refers to the link:
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Complete each statement about membrane protein function by dragging each label into the appropriate blank. Insulin, a hydrophilic compound, binds to a _____ site on the cell's extracellular surface, causing activation of a second messenger system on the cell's interior
Insulin is a hydrophilic compound, binds to a receptor site on the cell's extracellular surface causing activation of a second messenger system on the cell's interior.
What is Insulin?Insulin is defined as a peptide hormone produced by the beta cells of the pancreatic islets in humans encoded by the INS gene, which is considered the body's main anabolic hormone.
Insulin is an essential hormone that helps the body convert food into energy and control blood sugar levels. If a person has diabetes, the body cannot make enough insulin or use it properly.
Thus, Insulin is a hydrophilic compound, binds to a receptor site on the cell's extracellular surface causing activation of a second messenger system on the cell's interior.
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