Answer:
Argument: A trend toward an increased incidence of tusklessness will result in decreased population sizes in the
future.
Claim: In the long term, tusklessness in African elephants is not beneficial to populations, even when heavy
poaching is occurring. So, as tusklessness increases, elephant population sizes will decline.
Evidence: Although poachers kill elephants with tusks, elephants rely on their tusks for survival. Elephants use
their tusks to strip bark off trees for food and to dig up water and minerals from the ground. Male elephants
also use their tusks in competitions with other males for females.
Reasoning: Tuskless elephants are probably not as healthy as those with tusks, as they cannot eat bark off trees
and are unable to dig for water and minerals. During harsh conditions such as droughts, elephants without
tusks would be less likely to survive. Male elephants without tusks are also more likely to be injured during
mating competitions. If too many males are injured or killed, there may be a decline in reproduction.
Over time, many of the tuskless elephants will die or be unable to reproduce, so the population’s size will
decrease.
Explanation:
How does natural selection lead to evolution?
a
Environmental changes kill weaker members of the species.
b
Stronger offspring kill weaker members of the species.
c
Overproduction provides food for stronger members of the species.
d
Helpful traits accumulate among surviving members of the species
Answer:
The correct answer is option b. "Helpful variations accumulate among surviving members of the species".
Explanation:
Natural selection is the most accepted theory of evolution, described by Charles Darwin in 1859. This theory explains that by the survival of the fittest, the helpful variations accumulate among surviving members of the species. The variations or mutations that are not helpful for the species are lost by predators and environmental factors, while the helpful variations remain in the surviving members, which leads to the species evolving to have improved characteristics.
Which of the following are important uses of genetic maps?
Select all that apply.
a) copying DNA during PCR reactions
b) pasting two DNA strands together to form one molecule
c) studying evolution
d) locating genes that cause disease
What is the type of allele that only affects the phenotype in the homozygous condition?
What did Malthus think would limit the population size?
A. Food supply
B. Predators
C. Disease
D. Reproductive strategy
Answer:
A Food Suply
Explanation:
Malthus believed that the population size would be limited by the availability of food supply. He argued that while populations have the potential to grow at a geometric rate, the food supply could only increase at an arithmetic rate. Hence option A is correct.
How to limit the population size?There are various ways to limit population size, some of which include:
Birth control: Providing access to contraception and family planning services can help to control birth rates and reduce population growth.
Education: Educating people, especially women, about the benefits of having smaller families can also help to reduce population growth rates.
Economic incentives: Providing economic incentives, such as tax breaks or financial rewards for having smaller families, can also help to limit population growth.
Malthus believed that this was a natural and inevitable process and that efforts to alleviate poverty and suffering would only lead to more population growth and ultimately exacerbate the problem.
This means that the population would eventually outgrow the available food supply, leading to famine, disease, and ultimately population control through natural selection.
Hence option A is correct.
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Which planets have evidence of water on the surface? Select two options.
Answer:
mars and earth
Explanation:
Answer:
The two planets that have evidence of water on the surface is Earth and mars.
Explanation:
Earth because we live there and we know there is water so obviously.
Mars because recently it was discovered that there was water in solid form inside of polar ice caps.
Which of the above mammals are The most closely related to each other
Manatee and sea lion
Dolphin and manatee
Dolphin and whale
Manatee and whale
idk if im in the right subject but please help
Which outcome would most likely suggest that data collected is unreliable?
A.)Other scientists conduct the same study but find different data.
B.) The data is put on a scatterplot but does not show any trend.
C.)Each data point is considered by many scientists to be accurate.
D.)Many tools were used in the same laboratory to measure the data.
A.
Let's break it down:
-If the study has been conducted by multiple others and they get different results, it might be a sign that something went wrong in the experiment, and the data is unreliable. For example, if everybody else timed an event and got the same exact time except for the fact that you got a different time, you may start to suspect that you had done something wrong and the data was unusable.
Hope this helped! :)
Which of the following is an anaerobic process
A. Glycolysis
B. Electron
C. Fermentation
D. Kreb’s Cycle
Answer:
A.
Explanation:
anaerobic glycolysis. Anaerobic glycolysis is the process by which the normal pathway of glycolysis is routed to produce lactate. It occurs at times when energy is required in the absence of oxygen. ... In order to regenerate NAD, the enzyme lactate dehydrogenase converts pyruvate to lactate.
Organisms classified as fungi and plants have several similar characteristics. Which of the following are shared characteristics of both fungi and plants?
I. autotrophic
II. eukaryotic cells with a cell wall
II. multicellular organisms
A. I only
B. Ill only
C. I,II, and III
D. Il and III
Answer:
I think it is D
Explanation:
Plants are all of the above (I,II,III) but fungi are heterotrophic, but other than that they have a cell wall in their eukaryotic cells and are multicellular, so it is most likely D.
What might explain the real-world results, show in
the graph to the right, for one class of twenty
students? Check all that apply.
Fourteen people were immune at the
beginning
Noninfected individuals never came into
contact with infected individuals.
A few people were immune at the beginning,
and other people never came into contact
with the disease.
The people who became sick got better
before they could pass on the disease.
Answer:
A.Fourteen people were immune at the beginning.
C.A few people were immune at the beginning, and other people never came into contact with the disease.
D.The people who became sick got better before they could pass on the disease.
Explanation:
Answer:
Yes! The correct answers are:
A.) Fourteen people were immune at the beginning.
C.) A few people were immune at the beginning, and other people never came into contact with the disease.
D.) The people who became sick got better before they could pass on the disease.
Explanation:
i did the assignment and got it correct.
Which of the following best describes meiosis?
It is carried out in all tissues that require cell replacement
It occurs only in cells in the reproductive structures of an organism
It happens in all of the tissues except the brain and spinal cord
It is the first stage of mitosis
Answer:
It occurs only in cells in the reproductive structures of organisms.
Explanation:
Meiosis only occurs in the reproductive cells, producing gametes with half of the genetic information as the parent cell.
Meiosis can be best described as the event which occurs only in the cells which are the part of reproductive structures in an organism. Thus, the correct option is B.
What is Meiosis?
Meiosis is a type of cell division which occurs in sexually reproducing organisms. It is also known as reductional division as in this division, the chromosomal number is reduced to half. This division is responsible for introducing genetic variations in a population.
Meiosis is a type of cell division which occurs in the sexually reproducing organisms. This division is responsible for reducing the number of chromosomes in the gametes or sex cells such as eggs and sperms by half. In humans, normal body cells or somatic cells are diploid in nature. These cells contain two sets of chromosomes i.e., one from each parent.
Therefore, the correct option is B.
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Identify two major on marine ecosystems that are caused by human
Answer:
two major things is pollution and overfishing.
Explanation:
hope this helps
A genomic sequencing method called _______ sequencing was used in the human genome project. In this method, DNA is broken into many small fragments and the fragments are sequenced, then computers help reassemble the fragments into the larger DNA sequence
Answer:
Shotgun Sequencing
Explanation:
Shotgun sequencing is a laboratory technique for determining the DNA sequence of an organism's genome. The method involves breaking the genome into a collection of small DNA fragments that are sequenced individually. A computer program looks for overlaps in the DNA sequences and uses them to place the individual fragments in their correct order to reconstitute the genome.
Answer:
1. shotgun
2. inbreeding
3. cloning
4. Y chromosomes
5. The Human Genome Project sought to map a human's entire genome.
6. Inbreeding is a type of selective breeding that occurs when individuals with similar characteristics continue to be bred in an attempt to keep a certain set of traits. However, inbred organisms are genetically similar, and the probability that members of the population will receive mutated alleles leading to disorders is high.
7. Since no two humans have the same DNA, except for identical twins, forensics can take advantage of this fact by using DNA fingerprinting to solve crimes, convict wrongdoers, or overturn unjust convictions.
Explanation:
Unit 2 Short Answer Question (Do NOT leave blank): Use the following words to fill in the blanks: transcription, dairy products, enzymes, proteins, repressor, rna polymerase, lactose intolerant, lactase, operator, ecoli, transcribe, bases, repressor, operator.
An example of prokaryotic gene expression is the lac operon. When a person is 1)____________, they do not produce the enzyme 2)___________, which aids in the digestion of lactose, the sugar found in 3)______________. If a person who is lactose intolerant eats or drinks a dairy product, lactose travels down the digestive tract into the large intestine, where the genes in the bacteria, 4)__________ , are turned on to create the 5)_______ / 6)________ needed to digest the lactose. In E.Coli, when lactose is present, it acts as an inducer and binds to the 7)____________ protein, keeping it from attaching to the 8)___________. 9)_____________ then is able to attach to and 10)___________ the E.Coli gene by matching up the 11)______. When lactose is NOT present, the 12)____________ protein binds to the 13___________ and transcription is blocked. This is an example of gene expression (production of proteins) being controlled at 14)_____________.
Answer:
1. lactose intolerant
2. lactase
3. dairy products
4. E.coli
5. enzymes
6. proteins
7. repressor
8. operator
9. RNA polymerase
10. transcribe
11. bases
12. repressor
13. operator
14. transcription
Explanation:
Lac operon is good example of prokaryotic gene regulation. The lactose operon or lac operon is a type of operon which is use to transport and metabolize the lactose in E.coli and other bacteria. The lac operon is made up of three important components including promoter, an operator, and three genes that encode the enzymes required for lactose digestion.
A person who is lactose intolerant is unable to produce the enzyme lactase, which helps in the digestion of sugar generally present in dairy products. The lac operon is regulated by lactose in the environment.
So, when lactose intolerant people consume dairy products, the gens in bacteria E.coli present in the large intestine, turn on to produce enzyme or proteins required to digest the lactose.
When lactose is present, lac operon in E.coli, acts as an inducer and binds to the repressor protein which prevent it binding to the operator. RNA polymerase the binds to the promoter and transcribe the E.Coli gene by matching the base pair or bases.
When lactose is absent, repressor protein is allow to bind to the operator and inhibit the transcription process in E.Coli. The whole process is regulated during transcription in prokaryotes that involves lac operon.
Hence, the correct words for the blanks are as following:
1. lactose intolerant
2. lactase
3. dairy products
4. E.coli
5. enzymes
6. proteins
7. repressor
8. operator
9. RNA polymerase
10. transcribe
11. bases
12. repressor
13. operator
14. transcription
I need help ASAP !!!
Answer:
All different types of organisms. :)
which of these work together in a feedback loop?
A. Thyroid and parathyroid gland
B. Hypothalamus and pituitary gland
C. Adrenal and pineal gland
D. Ovaries and salivary gland
B. Hypothalamus and pituitary gland
A science teacher wants to use a line graph to model the relationship between the concentration of CO2 in the atmosphere and the global temperature from 1960 to 2017.
What would the graph show?
A)
global temperature increasing as CO2 concentration increases
B)
global temperature increasing as CO2 concentration decreases
C)
global temperature decreasing as CO2 concentration increases
D)
global temperature stabilizing as CO2 concentration increases
Answer:
A)
global temperature increasing as CO2 concentration increases
Explanation:
Global warming is the progressive increase in the temperature of the earth's atmosphere. Global warming is caused by an increase in the concentration of greenhouse gases e.g CO2, chlorofluorocarbons etc. These greenhouse gases, in which carbondioxide is an important example, are capable of trapping heat in order to keep the earth warm.
Howeever, as the concentration of CO2 and other greenhouse gases increase in the atmosphere, the earth's atmospheric temperature also increases above normal, causing Global warming.
In this case, the science teacher's graph will show that global temperature is increasing as CO2 concentration increases.
describe the role of the immune system in fighting disease
Answer:
The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.
What is the difference between dominant and ressesive trait
Answer:
When an allele is dominant, the characteristic it is connected to will be expressed in an individual. When an allele is recessive, the characteristic it is connected to is less likely to be expressed. Recessive traits only manifest when both alleles are recessive in an individual.
Explanation:
Dominant means that one of the versions trumps the other. In our example here, brown is dominant over blue so you end up with brown eyes.
The way people write out dominant and recessive traits is the dominant one gets a capital letter and the recessive one a lower case letter. So for eye color, brown is B and blue is b.
What part of the cell is responsible for making proteins?
As organisms release energy during cellular respiration, carbon dioxide is produced from the carbon in energy storage molecules.
True Or False?
Answer:
I believe this is true.
Explanation:
what body system can be linked with the endocrine, nervous, and reproductive systems?
Answer:
the nervous system
Explanation:
Explain why a dead tree would still be a biotic factor, even though it is no longer alive.
Answer:
I think it's because it will decay and be soil and soil is biotic factor
A dead tree would still be a biotic factor, even though it is no longer alive because biotic factors include living organisms and the remains of the living organisms.
What are biotic factors?Biotic factors are those factors that are living and growing and reproducing. The living organism that were once lived are also comes sunder biotic factors.
A dead tree mean a dried tree that still has wood and dry leave. The wood will decompose or will use in burning purpose. The dead tree will still consider as a biotic factor because it was once alive.
Thus, Even if it is no longer alive, a dead tree would still count as a biotic factor because biotic factors comprise both living species and their remains.
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The Florida Everglades is a large, warm wetland with many plants, animals, and microscopic organisms. Which part of the Earth system includes the water in the Everglades?
Group of answer choices
a.the atmosphere
b.the hydrosphere
c.the cryosphere
d.the geosphere
Answer: B. The hydrosphere
Explanation:
Hydrosphere means “all the waters on the earth’s surface...” so even the waters in the Everglades would be included. Hope this helps!
The Hydrosphere is the part of the Earth system that includes the water in the Everglades. Thus, the correct option is B.
What is a Hydrosphere?A Hydrosphere may be characterized as the combination of water and its derivative forms present around the Earth's planet.
The hydrosphere represents all the sources of water available worldwide such as in lakes and streams, subsurface water, the ice of glaciers, and water vapor on the earth's planet.
It is the region of the whole earth that significantly comprises all source of water and its derivatives compounds like water vapor, ice (solid form), etc.
So, the wetland of Florida, i.e. Everglades is also includes the hydrosphere part of the Earth system.
Therefore, the Hydrosphere is the part of the Earth system that includes the water in the Everglades. Thus, the correct option is B.
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How do the geography and geographical features of your area affect the temperature?
Answer:
An area's latitude on the surface of the Earth affects the weather because it changes the intensity of the sun's light that the area receives. Things like mountains affect the weather by directing air currents, which can send storms to you, or keep them away. If you live in a place with lots of vegetation, it will be more humid, and warmer, because the plants retain the heat.
_____ algae are important in the formation of coral reefs.
Brown
Fire
Golden-brown
Red
Answer: D; red algae
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explain the importance of understanding genetics and heritability. what might a geneticist study and how could that help living things on earth? use specific examples and include the basic structure of function of genes
Answer:
Heritability is a measure of how one person differs from the other based on their genetic make up. Differences in genes or their make up leads to differences in their traits or characteristics such as height, eye color, and intelligence. Genetics and its applications have a wide variety of applications serving the human mankind. This includes the detection of many diseases like cancer at early stages,treatment of diseases, forensic applications with DNA fingerprinting, Cross breeding in both plants and animals to obtain high quality products with desired traits like, taste, fertility, size, disease resistance etc. Genetic enineering and Biotechnology has carved a niche of its own in th field of Science these days and is a promising feild which would address many problems faced by the world today.
Gene structure is the organisation of specialised sequence elements within a gene. Genes contain the information necessary for living cells to survive and reproduce. In most organisms, genes are made of DNA, where the particular DNA sequence determines the function of the gene.
Genes are what is inherited from an organism's parents and what give the offspring certain characteristics of the parents, and alleles are different forms of a gene. For example, there are several different alleles for eye color genes, such as blue alleles (blue eyes) and brown alleles (brown eyes).
Explanation:
Describe the arrangement of water particles in each state.
Answer:
Make sure to attach an image
Explanation:
Click the paperclip and attach an image.
Hope this helps!!!
Chemical digestion in the stomach is aided by what? mucus saliva hydrochloric acid enzymes
Please help me with answer
Answer:The Great Oxygenation Event, which occurred around 2.45 billion years ago, was probably the first major extinction event. Since the Cambrian explosion, five further major mass extinctions have significantly exceeded the background extinction rate.
Explanation:
got this from the internet very helpful :)