In a tube-within-a-tube body plan, the interior tube is known as the alimentary canal or gut.
This tube is responsible for the process of digestion and absorption of nutrients within an organism.
Alimentary Canal: The alimentary canal is a muscular tube that extends from the mouth to the anus and is responsible for the digestion and absorption of nutrients.
It is a continuous pathway that allows food to move through various regions, undergoing mechanical and chemical processes along the way.
Regions of the Alimentary Canal: The alimentary canal is divided into several regions, each with specific functions in the digestive process.
Mechanical digestion involves physical processes like chewing and mixing, while chemical digestion involves the action of enzymes that break down food components.
Muscle Contractions: The walls of the alimentary canal contain smooth muscles that contract rhythmically, producing movements that propel food along the digestive tract.
These contractions, known as peristalsis, help mix food with digestive enzymes and move it through the various regions of the alimentary canal.
Nutrient Absorption: The inner lining of the small intestine contains finger-like projections called villi and microvilli, which greatly increase the surface area available for nutrient absorption.
Nutrients, including carbohydrates, proteins, fats, vitamins, and minerals, are absorbed through these structures into the bloodstream and transported to cells throughout the body for energy and other metabolic processes.
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Incomplete dominance and Codominance are often confused. they have a lot of similarities and differences. in this weeks SBW you will need to explain the 1 similarity and 2 differences. You will also need to provide a way you will remember which one is which.
incomplete dominance and codominance both have two alleles in their genotype. Incomplete dominance blends the two traits together while in co-dominance both alleles are clearly shown, they are not blended together. A way you can remember the difference is by thinking about a co-worker, they work together just like CO- dominance, they both start with co. For incomplete dominance, you can remember because neither alleles are complete, so they are incomplete.
Scientists have discovered that a species of bird has decreased in number
by over 60%. The scientists eliminated nutrient shortages and natural
cycles as reasons for the decline.
Which factor might have contributed to the birds' decline?
Choose 1 answer:
A Viral immunity
B Fewer predators
C Habitat destruction
D Increase in viable offspring
The factor that might have contributed to the birds' decline is habitat destruction (option C).
What is habitat loss?Habitat loss refers to the reduction in the amount of space where a particular species, or group of species can survive and reproduce.
Habitat loss can result in the reduction of a population of a species and can negatively affect biodiversity in general.
According to this question, scientists have discovered that a species of bird has decreased in number by over 60%. They ruled out nutrient shortages and natural cycles as reasons for the decline.
The possible reason left among the options is habitat destruction.
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Mom is heterozygous A and dad is type AB blood type. Do the Punnett square. What are the chances the offspring will be type B
Dad is type AB
Mom is heterozygous type A which is Ao
after drawing the punnet square (the image attached) you will find that mom and dad produced offsprings with the genotypes: AA, AB, Ao, and Bo
Parent AB X Ao offspring probabilities
1/4 type AB (25%)
1/4 type B (25%)
1/2 type A (50%)
hope this helps :)
Describe the function of each organelle.
Vacuoles
Answer:
In biology, a vacuole is an area of a cell that is devoid of cytoplasm, membrane-lined, and filled with fluid. Vacuoles are crucial cytoplasmic organs (organelles), particularly in protozoa (single-celled eukaryotic creatures), carrying out tasks such water storage, intake, digesting, excretion, and expulsion. Plant cells frequently have big core vacuoles, which allow them to grow large without acquiring the mass that would make metabolism challenging. Plants, fungi, algae, and certain other species also store potent secondary compounds in their vacuoles to shield the cell from self-toxicity, such as tannins or other biological colors.
How the genes found in DNA can make different proteins?
Griffith studied two strains of bacteria, the S strain and the R strain. Mice injected with the S strain died, while mice injected with the R strain did not become ill. When he used heat to kill'S cells and then injected the dead cells into the mice, the mice did not die. However, when he mixed the heat treated S cells with living R cells, the mice got sick and died What was Griffith's conclusion? What was the significance of his findings?
_______ are sentence frames that help identify the number of participants involved in the event or situation described by a sentence. A) Information structures b) Verbal structures c) Argument structures d) Linguistic structures
Answer:
C. Argument structures.
Explanation:
Argument structures are sentence frames that help identify the number of participants involved in the event or situation described by a sentence.
2. There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following:
The frequency of the recessive allele (q).
The frequency of the dominant allele (p)
The frequency of heterozygous individuals (2pq).
1) The frequency of the recessive allele (q) is 0.2.
2) The frequency of the dominant allele (p) is 0.8..
3) The frequency of heterozygous individuals (2pq) is 0.32
1) The frequency of the recessive allele (q) can be found using the Hardy-Weinberg equation:
p² + 2pq + q² = 1
where p² represents the frequency of the homozygous dominant genotype, 2pq represents the frequency of the heterozygous genotype, and q² represents the frequency of the homozygous recessive genotype.
Given that 4% of the students are homozygous recessive, q² = 0.04. Solving for q, we get:
q² = 0.04
q = √(0.04)
q = 0.2
2) The frequency of the dominant allele (p) can be found by subtracting the frequency of the recessive allele (q) from 1:
p = 1 - q
p = 1 - 0.2
p = 0.8
3) The frequency of heterozygous individuals (2pq) can be found using the value of p and q that we have calculated:
2pq = 2 x 0.8 x 0.2
2pq = 0.32
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The complete question is:
There are 100 students in a class. Ninety-six did well in the course whereas four blew it totally and received a grade of F. Sorry. In the highly unlikely event that these traits are genetic rather than environmental, if these traits involve dominant and recessive alleles, and if the four (4%) represent the frequency of the homozygous recessive condition, please calculate the following:
1) The frequency of the recessive allele (q).
2) The frequency of the dominant allele (p)
3) The frequency of heterozygous individuals (2pq).
A nurse is teaching about the energy needed at rest to maintain life-sustaining activities for a specific period of time. What is the nurse discussing? a. Resting energy expenditure (REE) b. Basal metabolic rate (BMR) c. Nutrient density d. Nutrients
The nurse is discussing about Basal metabolic rate (BMR).
B is the correct answer.
The body's BMR is a measure of how much energy it requires to stay in a state of equilibrium. Because lean mass requires a lot of energy to maintain, the total lean mass, particularly muscle mass, plays a significant role in determining your BMR.
Analysis of a person's oxygen and carbon dioxide intake and output is necessary for BMR estimates. This analysis is known as "calorimetry" among experts. It is a technique for calculating how many calories a person is using in their daily activities. A person's height is considered by BMR as well.
The vital bodily processes that keep life alive require between 60% and 75% of the energy used each day. The maintenance of body temperature (thermoregulation), respiration, heartbeat, nervous system activity, and hormone activity are among these tasks.
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After evaluating his colleague's claim about plant pathogens being
carried in African dust clouds, the ecologist decides to isolate and
genetically test fungi samples from all of his outdoor and greenhouse
plants. He compares the results to DNA samples of the Alternaria fungi
commonly found in both North America and Africa, as shown in this
table.
Genetic Similarity of Alternaria Fungi from Ecologist's Samples
with Common Species Found in North America and Africa
Alternaria
Species
1
2
3
Plant
Location
Greenhouse
Outdoors
Outdoors
Percent Similarity
to North
American Species
90%
92%
10%
(→
Percent
Similarity to
African Species
20%
14%
88%
44
HEAVAN
The African Alternaria species causes
disease to the ecologist's plants. Which
species of Alternaria would most likely
cause damage to the ecologist's plants, and
where could the ecologist keep his plants to
help protect them from this species of
Alternaria? Enter your
swer in the box
provided.
UTE
I
According to the table, the Alternaria species that has a larger proportion of genetic resemblance to the African species is the one that would most likely harm the ecologist's plants.
According to the table, the Alternaria fungus from the outdoor area had an 88% similarity rate to the African species. The ecologist could keep his plants in the greenhouse to help protect them from this type of Alternaria as the greenhouse sample had a higher percentage resemblance to the North American species and a lower percentage similarity to the African species.
This implies that the atmosphere in a greenhouse would be less favorable for the development and spread of the African Alternaria species and might thus offer some protection against it. Fungus helps to restore ecosystem by undergoing decomposition.
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Correct question:
After evaluating his colleague's claim about plant pathogens being carried in African dust clouds, the ecologist decides to isolate and genetically test fungi samples from all of his outdoor and greenhouse plants. He compares the results to DNA samples of the Alternaria fungi commonly found in both North America and Africa, as shown in this table. Genetic Similarity of Alternaria Fungi from Ecologist's Samples with Common Species Found in North America and Africa Alternaria Species Plant Location Greenhouse Outdoors
Percent Similarity to North American Species 90% 92% 10%
Percent Similarity to African Species 20% 14% 88%
The African Alternaria species causes disease to the ecologist's plants. Which species of Alternaria would most likely cause damage to the ecologist's plants, and where could the ecologist keep his plants to help protect them from this species of Alternaria? Enter your answer in the box provided.
6. Which of these statements about particulate matter less than 2. 5 microns in diameter is true?
Particulate matter less than 2.5 microns in diameter (PM2.5) is a type of air pollutant that can have adverse effects on human health. The correct option is A. They can cause heart and lung disease.
This pollutant is considered more harmful than larger particles because it can penetrate deep into the lungs and even enter the bloodstream, causing respiratory and cardiovascular problems.
One true statement about PM2.5 is that it can come from both human and natural sources. Human sources include emissions from vehicles, power plants, and factories, while natural sources include dust and wildfires. The concentration of PM2.5 in the air can also vary depending on location, weather conditions, and time of day.
Additionally, exposure to PM2.5 can have different effects on different populations. Children, the elderly, and those with preexisting respiratory or cardiovascular conditions are more susceptible to the harmful effects of this pollutant.
Overall, reducing PM2.5 emissions and taking measures to protect oneself from exposure can help mitigate the negative health impacts of this type of air pollutant. Therefore, the correct option is A. They can cause heart and lung disease.
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complete question is :
13. Which of these statements about particulate matter less than 2.5 microns in diameter is true?
A. They can cause heart and lung disease.
B. They're produced from nitrogen gas (N.).
C. They're less of a threat than particulate matter that's 10 microns in diameter
D. They're the size of a human hair.
A couple has two children with a genetic disease. what is the probability that the next child will have the same genetic disease
The probability of the next child having the same genetic disease depends on the inheritance pattern of the specific disease. If both parents carry a genetic mutation that causes a specific disease, then there is a chance that their children will inherit the same mutation and develop the same disease.
If the genetic disease is caused by a recessive mutation, then the probability of the next child having the same disease is 25% (1 in 4). This is because each parent carries one mutated copy of the gene but does not show any symptoms of the disease. When they have children, each child has a 25% chance of inheriting two copies of the mutated gene, one from each parent, and thus developing the disease.
If the genetic disease is caused by a dominant mutation, then the probability of the next child having the same disease is 50% (1 in 2). This is because only one copy of the mutated gene is needed to cause the disease, and each child has a 50% chance of inheriting the mutated gene from the affected parent.
It is important to note that these probabilities are not exact and can vary depending on other factors such as genetic testing and family history. Consultation with a genetic counselor can help provide more personalized information and guidance for families dealing with genetic diseases.
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The level ____________________ is one step less inclusive/more specific than the Domain level
Answer:
Kingdom
Explanation:
List the main components in our diet and state their function
The main components of a healthy diet are carbohydrates, proteins, fats, vitamins, minerals and water. Carbohydrates are the main source of energy for our bodies and are found in grains, legumes, fruits and vegetables.
Proteins are the building blocks of cells and are found in meats, eggs, nuts and dairy products. Fats help the body absorb vitamins and minerals and are found in oils, nuts and dairy products. Vitamins and minerals are essential for our bodies to function properly and are found in fruits, vegetables, whole grains and dairy products.
Each of these components provides our bodies with vital nutrients and energy. Carbohydrates are broken down into glucose, which is used by the body to provide energy. Proteins are used to build and repair cells and tissues, while fats help to transport vitamins and minerals around the body.
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Identify the structure of the human heart which is valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue that prevents blood from flowing back into the atrium. Also, called the bicuspid valve. (check out the hint)
A) mitral valve
B) aortic valve
C) tricuspid valve
D) pulmonary valve
The mitral valve is a valve between the left atrium and left ventricle of the heart, consisting of two triangular flaps of tissue that prevents blood from flowing back into the atrium.
Here, correct option is A.
Also, called the bicuspid valve, this valve is located between the left atrium and left ventricle and prevents the backflow of oxygen-rich blood from the left ventricle into the left atrium. The mitral valve is composed of two flaps that open and close in a way similar to a door, allowing blood to flow from the left atrium to the left ventricle, but not back the other way.
The flaps are made of strong connective tissue that is covered in a thin layer of endothelial cells. When the heart contracts, the mitral valve opens and allows oxygen-rich blood to flow from the atrium to the ventricle. When the heart relaxes, the valve closes and prevents the backflow of blood.
The mitral valve is essential for proper functioning of the cardiovascular system, as it ensures that the oxygen-rich blood reaches the ventricle and the rest of the body.
Therefore, correct option is A.
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Fertilizer runoff causes an increase in the dissolved nutrients of the ecosystem shown in the food web below. This causes the number of phytoplankton to double.
Fertilizer runoff is rich in nutrients such as nitrogen and phosphorus, which causes an increase in the dissolved nutrient levels in aquatic ecosystems which causes an increase in the amount of phytoplankton.
Thus, these nutrients act as a fertilizer, which results in the rapid growth of phytoplankton, and their population size gets doubled. This leads to an increase in the population of primary consumers such as zooplankton and small fish that feed on them in aquatic ecosystems.
However, if the phytoplankton population grows too large, algae and other aquatic plants also increase in aquatic ecosystems, which leads to oxygen depletion and harmful algal blooms, thereby, disrupting the entire ecosystem.
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Which would cause a plant to stop growing?
Lack of water, nutrient shortages, inadequate lighting, severe temperatures, pests or illnesses, and physical harm are some of the conditions that might halt a plant from growing. Furthermore, plants have a genetically predetermined growth cycle that affects when they stop growing. Extreme weather can stress a plant and interfere with its regular growth processes, which can result in stunted or stopped growth when any of these elements are present.
Answer: Many things could cause a plant to stop growing like lack of sunlight, too much sunlight, lack of water, too much water, wrong ph level for soil, etc.
Explanation: Like us humans plants need their basic needs met just like how we need to eat and drink water, and just like us they can over do this(eating too much food=problems or if you don't eat your growth could become stunted)
PLEASE HELP!!!!!!!!!
Transcription and translation are the two processes involved in protein synthesis. 1a- mRNA codons: AUG AUU CCG CCA GCA UAC UAG. 1b- Amino Acids: Met-Ile- Pro-Pro-Ala-Tyr. 2- Severe mutation replaces isoleusine by threonine. The middle uracyl from the second codon must be replaced by a cytosine. 3- Alteration in enzymatic activity.
What are transcription and translation?
Transcription and translation are two processes involved in protein synthesis.
Transcription occurs first in the nucleus. During this event, mRNA is synthesized by copying a segment of the DNA molecule. The template DNA strand is used to pair its nucleotides and grow the new mRNA strand.
Translation occurs in the cytoplasm. During this event, the protein is grown by reading the mRNA codon sequence. tRNA, associated with rRNA, recognizes the codons and adds the correct amino acid to the new growing polypeptide.
DNA triplets: TAC TAA GGC GGT CGT ATG ATC
1a- mRNA codons: AUG AUU CCG CCA GCA UAC UAG
1b- Amino Acids: Met Ile Pro Pro Ala Tyr Stop
2- Mutation
mRNA codons: AUG ACU CCG CCA GCA UAC UAG
Amino Acids: Met Thr Pro Pro Ala Tyr Stop
The severe PKU mutation occurs when a nucleotide substitutes another nucleotide. In this case, in mRNA molecule, an uracyle from the second codon was replaced by a cytosine. Hence, the new codon coded for Threonine instead of coding for isoleusine as the original sequence.
The column Amino acid change in PHA enzyme shows that the severe mutation involves the change in which isoleusine is replaced by threonine.
In order to produce this point mutation, the middle uracyl from the codon must be replaced by a cytosine.
3- Mutations impact on phenylalanine hydroxylase (PHA) enzymatic activity, causing a phenotypic range that varies between the severe PKU and the mild PKU. Alterations in the enzyme activity may drive the enzyme to consume all the stored phenylalanine and to produce wastes that are toxic to the organism, specially to te brain.
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What is the purpose of ethical guidelines for the handling of experimental subjects?
a. to help scientists plan an experiment in which no animals or humans are harmed
b. to make sure that the hypothesis is revenant to the research question
c. to list all of the materials that are needed to perform an experiment on garden plants
d. to indicate that the research question under investigation has never been asked before
The purpose of ethical guidelines for the handling of experimental subjects is to help scientists plan an experiment in which no animals or humans are harmed. The answer is a.
These guidelines aim to prevent any physical, psychological, or emotional harm to the subjects involved in the experiment. They also ensure that the experiment is designed to achieve its scientific objectives without compromising the dignity, welfare, and safety of the subjects.
The guidelines require that researchers obtain informed consent from the subjects, maintain confidentiality of their data, and minimize any risks or discomfort associated with the study.
Adhering to ethical guidelines promotes the integrity and credibility of research and helps to maintain public trust in scientific studies. Hence, a. is the right answer.
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Question 1: How does increasing the size of the habitat affect carrying capacity? Explain your answer. Recall the scenarios: 0–15 years, Little land; 15–30 years, Moderate land; 30–45 years, Ample land.
Increasing the size of the habitat can increase the carrying capacity. Carrying capacity is the maximum population size that a particular environment can sustain, and it depends on factors such as resources, predation, and competition.
In general, larger habitats have more resources available, which can support a larger population size. In the scenarios presented, the carrying capacity is expected to increase as the land availability increases.
In the 0-15 years scenario, there is little land available, which can limit the resources available for the population, resulting in a lower carrying capacity. In the 15-30 years scenario, there is moderate land available, which can support a larger population size. In the 30-45 years scenario, there is ample land available, which can support the largest population size of the three scenarios.
However, it's important to note that the relationship between habitat size and carrying capacity is not always linear and can be influenced by other factors such as predation and competition.
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Which sequence of processes occurs in the production of a cloned plant
The sequence of processes in the production of a cloned plant involves taking a cutting from a parent plant, inducing the cutting to form roots and a shoot, and then allowing the cutting to grow into a genetically identical plant to the parent.
In more detail, the process of cloning a plant typically involves taking a cutting from a parent plant that has desirable characteristics, such as disease resistance or high yield. This cutting is then treated with a rooting hormone and placed in a growing medium that encourages the formation of roots and a shoot.
Once the cutting has developed into a small plant, it can be transplanted into soil and grown into a mature plant that is genetically identical to the parent. This process is known as asexual reproduction and is commonly used in agriculture to produce crops with consistent traits.
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Ruby was recently diagnosed with anemia. ruby's doctor wanted to prescribe medication for her. however, different drugs help different patients
ruby's doctor filled out a form with information about her parent's medical history, include drug allergies. he also decided to do a dna test. he took a
sample of cells from inside ruby's cheek and sent it to a laboratory. the lab report showed which medications were most likely to help ruby feel beter
choose the words that correctly complete each sentence.
Ruby was recently diagnosed with anemia, which means that she has a deficiency in red blood cells or hemoglobin. To treat this condition, her doctor wanted to prescribe medication for her. However, different drugs work differently for different patients, and some may cause side effects or interact with other medications that she is taking.
To determine which medication would be best for Ruby, her doctor took a comprehensive approach. He filled out a form with information about her parent's medical history, including any drug allergies that they may have had. This information is important because some medications can cause allergic reactions or have adverse effects in individuals with certain medical conditions.
Additionally, Ruby's doctor decided to do a DNA test by taking a sample of cells from inside her cheek and sending it to a laboratory. The lab report showed which medications were most likely to help Ruby feel better based on her genetic makeup.
By taking these steps, Ruby's doctor was able to personalize her treatment plan and prescribe a medication that was safe and effective for her specific needs. This approach is becoming increasingly popular in healthcare, as it allows doctors to provide targeted treatment options and improve patient outcomes.
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can you please help me with this qn
Answer:
A cell is capable of carrying out all life processes, such as nutrition, excretion, respiration, etc. Hence it is called as the functional unit of life.
The cell is the smallest unit of life and all the living beings are made up of cells. Hence a cell is called the structural unit of life.
You are dissecting a cadaver. you are tracing an individual neuron as it ascends the spinal cord to the brain. you know that this neuron carries somatic sensory information from an afferent presynaptic neuron. where will you find its axon terminal?
a) all somatic sensory information that reaches the cerebral cortex is first processed in the thalamus
b) somatic sensory information from the left side of the body projects to the left side of the somatosensory cortex
c) all somatic sensory information travels together in a single tract in the spinal cord
d) ascending pathways in the anterolateral column of the spinal cord carry information about fine touch discrimination
e) ascending pathways in the dorsal column of the spinal cord carry information about pain from the back muscles
The axon terminal of the neuron carrying somatic sensory information from an afferent presynaptic neuron can be found in the thalamus of the brain. The answer is a)
The somatic sensory information from the body is carried by the dorsal root ganglia of the spinal nerves to the spinal cord. From there, the information ascends the spinal cord via two pathways: the dorsal column pathway, which carries information about fine touch discrimination and proprioception, and the anterolateral pathway, which carries information about pain, temperature, and crude touch.
These pathways eventually synapse in the thalamus of the brain, which acts as a relay station for sensory information. The axon terminal of the neuron carrying somatic sensory information from an afferent presynaptic neuron can be found in the thalamus because all somatic sensory information that reaches the cerebral cortex is first processed there.
It is important to note that somatic sensory information from the left side of the body projects to the right side of the somatosensory cortex, and vice versa. Hence, a) is the correct option.
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Basic body color for wolves is influenced by several genes, one of which has several different alleles. Two of these alleles-white coat and black coat-display incomplete dominance. A wolf is heterozygous for these two alleles displays a gray coat. Is it possible to produce a line of pure-breeding gray wolves? Why or why not?
Incomplete dominance: blended traits
The answer is no, it is not possible to produce a line of pure-breeding gray wolves.
This is because the gray coat color is a result of heterozygous pairing (having two different alleles) of the white coat and black coat alleles. In order to have a pure-breeding line, the individuals must have homozygous pairing (having two copies of the same allele) for the specific trait. Since the gray coat color is a result of incomplete dominance between the white coat and black coat alleles, it cannot be a pure-breeding trait.
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In some new zealand estuaries, shellfish-bed populations have declined due to habitat modification and overharvesting. How will this affect the biodiversity of these ecosystems?.
The decline of shellfish-bed populations in New Zealand estuaries due to habitat modification and overharvesting can have significant impacts on the biodiversity of these ecosystems.
The shellfish play a crucial role in the estuarine food web by filtering the water and providing food for other organisms. The loss of shellfish populations can lead to an increase in water turbidity and a decline in water quality, which can negatively affect other aquatic species.
Additionally, the removal of a dominant species like shellfish can cause a shift in the community structure and alter the composition and abundance of other species. The overall impact of the decline of shellfish populations on biodiversity in New Zealand estuaries can have far-reaching consequences and underscores the importance of conservation efforts.
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What traits do green algae and plants have in common?.
Green algae and plants share several traits due to their close evolutionary relationship. They are both members of the Plantae kingdom and have similar photosynthetic pigments, such as chlorophyll a and b.
Additionally, they both have cell walls made of cellulose and store energy as starch. Green algae and plants also share the same basic life cycle, alternating between a haploid and a diploid stage.
Furthermore, they both have a similar method of reproduction, with some green algae and plants being able to reproduce sexually and asexually. These shared traits between green algae and plants suggest a close evolutionary relationship and highlight the evolutionary transition from aquatic green algae to terrestrial plants.
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Assume that a cell has 20 chromosomes and 10 picograms of dna at g1 of the cell cycle. at the end s phase this cell will contain ____________.
At the end of S phase of the cell cycle, the cell will contain 20 chromosomes and 20 picograms of DNA. This is because during S phase, DNA replication occurs, resulting in the formation of two identical copies of each chromosome, called sister chromatids. The amount of DNA in the cell doubles during S phase, as each chromosome now has two copies of its DNA. However, the number of chromosomes remains the same, as the sister chromatids are still considered to be a single chromosome until they separate during cell division. Therefore, the cell will have 20 chromosomes and 20 picograms of DNA at the end of S phase.
The presence of cholesterol in the plasma membranes of some animal cells...
a:makes a membrane less flexible allowing more pressure from within the cell
b:enable membranes to stay fluid more easily when cell temperatures drop.
c:makes an animal more susceptible to heart disease.
Answer:
B. Enable membranes to stay fluid more easily when cell temperatures drop.
Explanation:
The presence of cholesterol in the plasma membranes of some animal cells enable membranes to stay fluid more easily when cell temperatures drop.
Explain at least one way a hybrid car is more fuel efficient and produces less pollution than a conventional gasoline vehicle.