In fact, this is true. Each group of size n from the population has an equal chance of being chosen when using a systematic random sample.
This is so because each element in the sample is chosen at random from the population, followed by the selection of the next n elements.
With this, each group of size n is guaranteed an equal probability of getting chosen.
Systematic Sample members are picked from a bigger group using a fixed, periodic interval but a chance primary source in sampling, a type of probability sampling approach.
By splitting the sample size of the population by the number of samples desired this interval, also known as the sampling interval, is computed.
Applied properly to a sizable population of a specific size, systematic sampling.
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the three foci of genetics are known as _____ genetics, _____ genetics, and _____ genetics.
The three focus of genetics are known as transmission genetics, molecular genetics, and population genetics.
Genetics is the branch of biology that studies heredity, or the phenomena through which organisms pass on their traits to their offspring. Transmission genetics is concerned with discovering the genes that influence a certain trait, as well as the patterns by which these genes are passed down from generation to generation or from cell to cell.
The structure and function of genetic units, i.e. the chemical content of genes and their expression in defining the structure of proteins, the most significant functional components of cells, are the focus of molecular genetics. Population genetics studies the pattern of gene distribution in organism populations as well as changes in population genetic organization.
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you use onpg to assay b-galactosidase activity in two e. coli cultures. od420 values indicate similar concentrations of b-galactosidase in both cultures. you do not measure od600. you can conclude that:
Based on the OD420 values indicating similar concentrations of b-galactosidase in both cultures, you can conclude that the b-galactosidase activity is similar in both E. coli cultures.
The enzyme -galactosidase activity in a culture is determined using the ONPG (o-nitrophenyl-D-galactopyranoside) assay. The test is based on the transformation of the substrate ONPG into o-nitrophenol, a yellow product that absorbs light at 420 nm. The amount of product produced is inversely related to the level of -galactosidase activity in the sample. The concentration of b-galactosidase in the sample can be calculated using the OD420 values obtained from the test.
In this instance, the OD420 values show comparable b-galactosidase concentrations in both E. coli cultures, indicating that this enzyme's activity is comparable in both cultures. However, measuring OD420 does not reveal the rate of development or general wellbeing of the cultures; it simply reveals the activity of b-galactosidase.
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consider the first copy of an allele for insecticide resistance that arises by mutation in a population of insects exposed to an insecticide. if, after some generations, we find that most of the population is resistant and shares in this mutation, is it likely that this resistance is an adaptation?
Consider the first copy of an allele for insecticide resistance that arises by mutation in a population of insects exposed to an insecticide, the resistance we get after few generation is due to adaptation.
In biology, there are three related definitions of adaptation. First, natural selection, a dynamic evolutionary process, adapts organisms to their environments, improving their evolutionary fitness. Second, it is a state that the populace has attained throughout that process. Thirdly, it is a phenotypic trait or adaptive trait that has been preserved and has evolved through natural selection and has a functional role in each individual organism.
Most insecticides have been successfully adapted to by insects, who have developed resistance to them. This adaption, which is recent and has rapidly and independently evolved in many different species, is extremely significant from an economic and medical standpoint. Resistance is thought to be pre-adaptive and to develop through recurring mutation of pre-existing alleles, while its exact origins are yet unknown.
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assuming independent assortment, what phenotypic ratio would you expect to see if an individual with the genotype rrgg is self-crossed?
A cross of two F1 half and halves, heterozygous for a solitary characteristic that shows inadequate predominance is anticipated to give a 1:2:1 ratio among both the genotypes and aggregates of the posterity.
From an expansive perspective, the expression "genotype" alludes to the hereditary cosmetics of an organic entity; at the end of the day, it portrays an organic entity's finished arrangement of qualities.
In one sense, the expression "genotype" — like the expression "genome" — alludes to the whole arrangement of qualities in the cells of an organic entity. In a smaller sense, be that as it may, it can allude to various alleles, or various types of quality, for specific characteristics, or attributes.
An individual's genotype is an extraordinary succession of DNA. All the more explicitly, this term is utilized to allude to the two alleles an individual has acquired for a specific quality. Aggregate is the distinguishable articulation of this genotype - a patient's clinical show.
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what is the role of cardiolipin in the inner mitochondrial membrane?
The involvement of mitochondria and sphingolipids in healthy and disease A special phospholipid called cardiolipin (CL) is almost entirely concentrated at the inner mitochondrial membrane (IMM), in which it is synthesized in the body.
The membranes built to synthesis ATP using the electrochemical gradient produced by the electron transportation chain are nearly solely related with cardiolipin. The inner membranes of mitochondria and the plasma membrane of bacteria are instances of such membranes. Cardiolipin is a significant phospholipid that is almost entirely present in the inner membrane of the mitochondria and is essential for maintaining mitochondrial function, hence it is possible that anomalies in CL can affect the bioenergetics and mitochondrial function.
The head group area is really little in comparison to the enormous tail region made up of four acyl chains since the head group forms such a compact bicycle architecture.
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TRUE/FALSE. because they connect to all spinal nerves, the rami communicantes allow sympathetic information originating from the thoracolumbar region to be dispersed throughout the body.
This is true that the rami communicantes enable sympathetic information coming from the thoracolumbar region to be distributed throughout the body because they connect to all spinal nerves.
Spinal nerves are assorted nerves that communicate straightforwardly accompanying the sleep-inducing or numbing drug cord to harmonize engine and sensual facts from the body's outskirts. Each nerve forms from nerve fibers, famous as fila radicular, reaching from the posterior (back) and anterior (first) ancestries of the spinal cord.
Think of the spinal nerve as the body of a wood - complete ramus resources branch in Latin, so the basic rami are the arms of a sleep-inducer nerve, inasmuch as the roots combine to form the sleep-inducing or numbing drug nerve. These agreements are very smooth to confuse. The basic rami are assorted extreme anxiety winning both engine and auditory fibers.
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what does the blending inheritance theory state and how is this different from preformationism? offspring develop from a miniature adult form, or homunculus, that already exists in the sperm or egg. offspring inherit discrete genetic information from both parents that manifests as a trait according to defined principles. genetic information travels from different body parts to the reproductive organs. offspring inherit all traits from one parent. the egg and sperm contain genetic material that mixes upon conception to produce an intermediate phenotype in the offspring.
Blending inheritance theory states that offspring inherit traits from both parents that blend together to form a new phenotype. (option 2).
Preformationism, on the other hand, posits that offspring develop from a miniature adult form (homunculus) that already exists in the sperm or egg. These theories differ in their explanation of how genetic information is passed from one generation to the next and how traits are produced in offspring.
This theory was later discredited and replaced by the theory of epigenesis, which states that offspring develop from a combination of genetic and environmental influences and that development occurs gradually over time.
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Complete Question:
what does the blending inheritance theory state and how is this different from preformationism?
1. offspring develop from a miniature adult form, or homunculus, that already exists in the sperm or egg.
2. offspring inherit discrete genetic information from both parents that manifests as a trait according to defined principles.
3. genetic information travels from different body parts to the reproductive organs.
4. offspring inherit all traits from one parent.
5. the egg and sperm contain genetic material that mixes upon conception to produce an intermediate phenotype in the offspring.
the kidneys are fully enclosed by the ribs for protection/ True or False, explain
False. The kidneys are not fully enclosed by the ribs for protection. The kidneys are located in the abdomen, not the thorax, and are partially covered by the ribcage.
The right kidney is located slightly lower than the left kidney, and both are situated just below the diaphragm, the muscle that separates the thorax from the abdomen. The lower part of each kidney is covered by a layer of fat, which helps to protect it, but the ribcage does not fully enclose the kidneys.
Instead, the ribs provide some indirect protection to the kidneys by helping to protect the lower back and spine, which is where the spinal column is located. This helps to prevent injury to the kidneys in case of a fall or other traumatic event.
However, it is not the primary role of the ribcage to protect the kidneys, and the kidneys are not fully enclosed by the ribs. The main function of the ribs is to protect the lungs, heart, and other important organs in the thorax.
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Which of the following best describes dehydration synthesis? View Available Hint(s) O A large molecule is broken down, or splits, to produce salt and water. O Two smaller molecules join together after a water molecule is added to split them apart. Two smaller molecules separate and reorganize into two new molecules after a water molecule is added to them. O Two smaller molecules join together after a water molecule is removed from between them.
Two smaller molecules join together after a water molecule is removed from between them is the correct statement.so, option (d) is correct.
What is molecules?
A molecule is defined as a collection of two or more chemically linked atoms of the same or distinct elements. For instance, one molecule of water is created when two hydrogen atoms and one oxygen atom combine to make one.
What is dehydration ?
A disorder that develops when the body loses excessive amounts of fluids, including water, that are necessary for normal function. Dehydration can also result from taking certain medications, not getting enough fluids in, excessive perspiration, a fever, excessive urination, or severe diarrhea and vomiting. Dehydration is typically brought on by these conditions.
During dehydration synthesis, two molecules synthesize together and water molecules are released or eliminated. Here a larger compound is formed and water is removed (losing water).
Option (A) is wrong because a large molecule is not broken down in dehydration synthesis rather two small molecules are joined together.
Option (B) is wrong because water molecules are released rather than being added in dehydration synthesis.
Option (C) is wrong because in dehydration synthesis two molecules does not separate and reorganize into two new molecules rather two small molecules join together. Water molecules are released and not added to them.
Therefore, smaller molecules join together after a water molecule is removed from between them is the correct statement.so, option (d) is correct.
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6. suppose you count 35 bacterial cells from a solution that has gone through the following serial dilutions: two 10-fold dilutions, followed by a 5-fold dilution, followed by 2-fold dilution. what should be the bacterial count from the original solution?
35000 cells/ mL be the bacterial count from the original solution
Given:
That ther are 35 cells but volume is not mentioned so let's assume 35 cells are present in 1 mL.
Total dilution factor = product of all individual dilution factors
Total dilution factor= 10×10×5×2=1000
Bacterial count in the original solution = bacterial count in diluted sample × dilution factor= 35×1000=35000 cells/ mL
What is a bacterial cell and its function?Bacteria are prokaryotes with chromosomes made up of a single closed DNA circle and no well-defined nuclei or membrane-bound organelles. They appear in a variety of forms and sizes, including minute spheres, cylinders, and spiral threads, as well as flagellated rods and filamentous chains.
Prokaryotic cells (Bacteria and Archaea) differ fundamentally from eukaryotic cells that comprise other forms of life. Prokaryotic cells are distinguished by a more simpler architecture than eukaryotic ones.
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Sunlight exposure has stronger effect on skin cancer risk in fair-skinned humans than in individuals with darker skin. This is an example of:
This is an illustration of contrasts in defenselessness to a specific well-being result in view of skin pigmentation, or at the end of the day, skin phototype.
How much melanin in the skin, not entirely settled by hereditary qualities, influences the skin's capacity to safeguard itself from the destructive impacts of bright (UV) radiation from the sun.
Lighter-looking people have less melanin and hence are more defenseless to skin malignant growth when presented to UV radiation contrasted with people with hazier skin who have more significant levels of melanin and more assurance against UV radiation.
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What assumptions must be met for a population to be in Hardy-Weinberg equilibrium?
For a population to be in Hardy-Weinberg equilibrium the following assumption must be met.
The population must be large. This is to insure that arbitrary lovemaking occurs and inheritable drift doesn't play a part. The population must be insulated from other populations. This is to insure that there's no gene inflow between the populations. Mutation can be absent. This is to insure that any new alleles can not be introduced into the population. Selection must be absent. This is to be just insure that genotypes with advanced fitness don't come overrepresented in the population. All individualities in the population must have the same chance of reproducing. This is to insure that there's no bias in the reproductive success of certain genotypes.To know more about Hardy-Weinberg equilibrium visit:
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Recent research has led to the development of solar-powered vehicles. Solar vehicles use panels that collect sun rays that are then converted to electricity by photovoltaic cells. The electricity is stored in a battery that runs the car.Which is the MOST likely reason for developing this type of transportation technology?
The most likely reason for developing this type of transportation technology Energy from solar cars is non-exhaustible.
Solar energy is used to generate electricity for solar cars. The solar panels are attached to the vehicle's surface, typically it's top. Solar energy is converted directly into electrical energy by photovoltaic (PV) cells. Material made of semiconductors makes up the PV cell; The term "semi" refers to its ability to conduct electricity more effectively than an insulator, but not as effective as a metal. PV cells make use of a variety of different semiconductor materials. There are many great advantages to using solar energy to power cars:
Fossil fuels, a scarce resource, will be used less when solar energy is used.Solar power costs nothing.Solar power does not pollute the environment.There will never be enough solar power.Know more about PV cell here: https://brainly.com/question/82317
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what part of photosynthesis involves an electron transport chain?
Which of these foods is actually a fruit in plant biology?
Onion
Pepper
Mushrooms
All of the above
Pepper is actually a fruit in plant biology.
The flowering plant known as black pepper (Piper nigrum), which belongs to the Piperaceae family, is grown for its peppercorn-shaped fruit, which is often dried and used as a spice and condiment. The fruit is a drupe (stonefruit), and it is dark red, about 5 mm (0.20 in) in diameter when it is fresh and fully grown, and it has a stone within that carries a single pepper seed. Simply called pepper, peppercorns and the ground pepper made from them can also be more specifically referred to as black pepper (cooked and dried unripe fruit), green pepper (dried unripe fruit), or white pepper (ripe fruit seeds). The Malabar pepper is widely grown there and in other tropical areas. Black pepper is a native of India's Malabar Coast.
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(FILL IN THE BLANK) _______is a barrier separating the cell’s genetic information from the cell’s cytosol
The cytoplasm of the cell and its genetic material are divided by the nuclear envelope.
In eukaryotic cells, the nucleus and cytoplasm are separated by the nuclear envelope (NE), a tightly controlled membrane barrier. There are several diverse proteins in it that have been connected to chromatin arrangement and gene regulation. The nuclear membrane presents a problem for cell division even if it permits sophisticated degrees of gene expression. The metazoan nucleus must totally disintegrate during mitosis in order for the mitotic spindle to have access to the chromatin; this creates the requirement to reassemble the nuclear compartment at the conclusion of each cell division.
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What happens when your blood sugar rises?
Answer: lots of things
Explanation: Hyperglycemia (high blood glucose) means there is too much sugar in the blood because the body lacks enough insulin. Associated with diabetes, hyperglycemia can cause vomiting, excessive hunger and thirst, rapid heartbeat, vision problems and other symptoms. Untreated hyperglycemia can lead to serious health problems.
wha is enzyme that adds nucleotides to exposed nitrogen bases
DNA Polymerase is the enzyme that adds nucleotides to exposed nitrogen bases. The polymerase builds a new DNA strand on top of the existing one in this manner.
DNA polymerase wraps itself around a single unwound polynucleotide strand once the primer is present and attaches new nucleotides to the exposed nitrogenous bases.
Nucleotides are shown in a schematic in two rows. Each nucleotide is depicted as a long, colored, vertical rectangle (a nitrogenous base) attached at one end to a gray, horizontal cylinder (a sugar molecule). A and T form a pair, while C and G form a pair, and each nitrogenous base binds only to its partner. An affinity exists between each nucleotide and its partner. As DNA polymerase moves down the unwound DNA strand, it relies on the pool of free-floating nucleotides surrounding the existing strand to construct the new strand. A pairs with T, and C pairs with G.
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A bacterium that only possesses the ability to fermentobtains energy A) by aerobie respiration only B) only in thepresence of oxygen only in the absence
B) only in the presence of oxygen. Fermentation is a metabolic process that occurs in the absence of oxygen and allows bacteria to obtain energy by breaking down sugars or other organic compounds. In contrast, aerobic respiration requires oxygen and produces more energy than fermentation, but some bacteria are not able to perform it.
Bacteria that only have the ability to ferment obtain energy by this process and are called anaerobic bacteria. They are adapted to grow in environments where oxygen is not available, such as in soil, water, or in the gut of animals. Fermentation is a metabolic process that allows microorganisms such as yeast and bacteria to produce energy by breaking down sugars or other organic compounds in the absence of oxygen. This process produces alcohol, lactic acid, and other by-products, depending on the type of microorganism and the substrate being used. Fermentation is used in many food and beverage production processes, such as the production of bread, beer, and cheese. It is also used in the production of biofuels, such as ethanol, and in the generation of industrial chemicals.
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discuss the similarities and differences between animal and bacterial virus multiplication.
The methods viruses employ to grow inside the host cell are similar in both bacterial and animal viruses. While there are distinctions in the many methods of action each process employs.
The animal virus viral protein breakdown by enzymes Synthesis In the cytoplasm, a bacteriophage. Synthesis by bacteria stopped. Formation of viral mRNA from viral DNA or RNA replication. synthetic components of viruses. Animal virus: RNA or nucleus in the cytoplasm (DNA). Synthesis of host cells stopped. replication of viral DNA or RNA, creation of viral RNA. Attachment - The bacterial virus enters the host with the aid of the tail fibers' attachment to the cell wall protein. Multiplication - Both the animal and bacterial viruses replicate inside a host cell. Animal viruses, on the other hand, get access to the host by capsid attachment to plasma membrane proteins.
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All of the following are characteristics of anabolism EXCEPT:
a: it involves synthesizing new biomolecules.
b: it primarily involves endergonic reactions.
c: it releases large amounts of energy.
d: an example of anabolism is linking amino acids together to form proteins.
e: an example is the formation of two ammonia molecules from one nitrogen molecule and three hydrogen molecules.
All of the following are characteristics of anabolism except it releases large amounts of energy that is option C.
What is anabolism?Anabolism is a group of metabolic mechanisms that build larger molecules from smaller ones. These reactions, also known as endergonic processes, need energy. Anabolism is the metabolic process that builds up, whereas catabolism is the metabolic process that breaks down. Anabolism is frequently confused with biosynthesis. Anabolism is the process through which the body uses catabolic energy to create complex compounds. These complicated molecules are then used to construct cellular structures, which are built from tiny and simple precursors.
Here,
All of the following are anabolic qualities, with the exception of option C, which releases huge amounts of energy.
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Write three or more questions that you still have about an organism's genotype, phenotype, and/or alleles. Your questions should be ones that can be researched or tested through investigations. Avoid asking questions that lead to yes and no answers. Then, cite specific statements, quotations, or data in the Article and the Dig Deeper that motivated you to ask each of your questions
Three more questions that I still have about an organism's genotype, phenotype, and/or alleles are:
How do changes in the environment impact an organism's phenotype expression?How does gene expression regulation influence an organism's phenotype?Can the same genotype produce different phenotypes in different environments?How does genetic drift impact the frequency of alleles in a population over time?The article and the Dig Deeper are not properly informed; hence, it is difficult to cite specific statements, quotations, or data in both of them.
An organism's genotype refers to its genetic makeup, including the specific sequences of its DNA that encode for specific traits. An organism's phenotype refers to its observable characteristics and traits, which can be influenced by both its genotype and the environment. Alleles are alternative forms of a gene that can lead to variations in an organism's phenotype.
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which organisms do not possess defenses againstt oxidatiive damage, such as catalases and superoxide
Organisms do not possess defenses against oxidative damage, such as catalases and superoxide are Obligate anaerobes.
An organism that needs oxygen to grow is said to be an obligatory aerobe. These organisms use oxygen during cellular respiration to metabolise materials like carbohydrates or fats in order to produce energy. The electron transport chain's terminal electron acceptor in this type of respiration is oxygen. Compared to fermentation or anaerobic respiration, aerobic respiration has the advantage of producing more energy (adenosine triphosphate, or ATP), but obligate aerobes are vulnerable to high levels of oxidative stress.
Oxidative stress is a result of an imbalance between a biological system's capacity to quickly detoxify reactive intermediates or repair the harm they have caused and the systemic manifestation of reactive oxygen species.
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which of the following is a component of rna but not a component of dna
1. ribose
2. deoxyribose
3. phosphate group
4. Nitrogen bases A C T G
Answer:
RNA is a single-stranded polymer of
nucleotides. It also differs from DNA in
that it contains the sugar ribose, rather
than deoxyribose, and the nucleotide
uracil rather than thymine.
Which technique first produced unequivocal support for the neuron doctrine of the nervous system (as opposed to the reticular theory)?a. Extracellular electrical recordingsb. EEG (electroencephalogram)c. Golgi stain (light microscopy)d. Electron microscopy of nervous tissuee. Acetylcholinesterase staining
C. Golgi stain (light microscopy) The Golgi stain (light microscopy) was the first technique that produced unequivocal support for the neuron doctrine of the nervous system.
The Golgi stain allowed researchers to visualize individual neurons in their entirety, demonstrating that they were distinct, discrete cells rather than a continuous network of cells as suggested by the nervous system theory. The Golgi stain uses a special silver impregnation technique that stains only a small proportion of neurons in a given sample, making it possible to see individual neurons in great detail. This technique provided the first clear evidence for the existence of individual neurons and was crucial in establishing the neuron doctrine as the prevailing theory of the organization of the nervous system. The Golgi stain remains an important tool for studying the anatomy of the nervous system and is still widely used in contemporary neuroscience research.
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which is a function of the plasma membrane? which is a function of the plasma membrane? regulate transport of dna in and out of the nucleus regulate production of lipids in the cell regulate production of proteins in the cell regulate traffic of chemicals in and out of the cell
The plasma membrane protects the cell from its outside environment. It mediates cellular transport and transmits cellular signals.
The plasma membrane provides protection for a cell. It protects the cell by acting as a barrier that separates the interior of all cells from the outside environment. The plasma membrane provides a fixed environment inside the cell.
Plasma membranes are selectively permeable, meaning that only certain molecules can pass through them.
The plasma membrane transports nutrients into the cell and also transports toxic substances out of the cell. Hence, regulates the transport of substances in and out of the cell.
The plasma membrane receives chemical messengers from another cell as it facilitates communication and signaling between cells. It does it through various proteins and carbohydrates in the membrane. Hence, it also acts as a receptor.
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Please HELP! (also just need the answer)!!!!
A student observes that she's always sleepy shortly after eating lunch, and she wants to be able to pay better attention in her mid-afternoon class. She tried doing 10 jumping jacks just before the class, but still felt sleepy around the middle of the class. The next day, she tried sipping water throughout the class and found that she could pay attention until the end of the class. The student now brings a water bottle to class.
Identify how this student applied the scientific method to solve her problem.
Answer:
Explanation:
The scientific method
1. Make an observation.
2. Develop a hypothesis.
3. Test hypothesis by trying different experiements.
4. Collect data.
5. Determine if hypothesis is supported by data.
Observation Felt sleepy after eating lunch.
Hypothesis 1: Student wanted to be more alert for afternoon class and hypothesized exercise might make her feel alert to pay better attention in class.
Experimentation and data collection: Tried exercising before class to alleviated sleepiness but still felt sleepy.
Hypothesis 2: Student wanted to be more alert for afternoon class and hypothesized drinking water during class might make her feel alert.
Experimentation and data collection: Tried drinking water during class and discovered she felt more alert and was better able to pay attention in class.
Hypothesis supported through experimentation and data. Tried exercising and found it did not work. Tried drinking water and discovered it worked.
enzo found a wooden hammer at a crime scene. the head of the hammer appears to have been used to strike the victim. what can he most accurately conclude about dna evidence and the hammer?
Enzo most accurately conclude about DNA evidence and the hammer that the handle of the hammer could possibly have sweat or skin on it.
Of order to make a double helix, two polynucleotide chains in deoxyribonucleic acid (DNA) coil around one another. All known organisms and many viruses have genetic information in the polymer that is necessary for their development, operation, growth, and reproduction. Nucleic acids include DNA and ribonucleic acid (RNA). Nucleic acids are one of the four main categories of macromolecules that are necessary for all known forms of life, along with proteins, lipids, and complex carbohydrates (polysaccharides).
DNA is a lengthy polymer consisting of nucleotides, which are units that repeat. DNA has a dynamic structure that can coil into little loops and other configurations along its length . It is made up of two helical chains that are joined together by hydrogen bonds in all species.
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What is the network of lymphatic vessels?
a modern understanding of the role of genes indicates that each psychological trait is influenced by how many genes?
A modern understanding of the role of genes in psychology suggests that most psychological traits are influenced by multiple genes, with the exact number varying depending on the trait in question. This is because many traits are polygenic, meaning they are influenced by the combined effects of many genes, each of which may have a small effect.
The exact number of genes that influence a specific psychological trait is not known. Psychological traits are thought to be influenced by a complex interaction of many genes, each with a small effect, as well as environmental factors. The idea that a single gene determines a psychological trait has been largely discredited and replaced with the concept of polygenic inheritance. It is estimated that many psychological traits are influenced by hundreds or thousands of genes.
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