Option A: Hormones only affect specific cells having the appropriate receptors.
The endocrine system comprises the endocrine glands and the hormones released by them. The endocrine system uses various hormones to regulate various body functions like body growth, reproduction, metabolism, sensory responses, etc. Hormones are the chemical substances secreted by endocrine glands into the bloodstream. They work by carrying signals to the specific target organs.
Homeostasis is a condition in which the pituitary gland regulates hormone production. When hormones are released in excess amounts, the pituitary gland instructs other glands to stop producing the hormone. While if it is low, the pituitary gland works the opposite.
Hormones are not free to regulate any of the body's functions. They are bound to their specific target cell or organ. For example, estrogen is a hormone released by ovaries in women. Estrogen can only regulate the menstrual cycle and it can't interfere with other body functions.
Therefore, option A is correct which states that hormones only affect specific cells having the appropriate receptors.
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a small population of 1,000 mice lives on a 100-acre island in the middle of a large lake. one dry summer, the lake level drops dramatically, which results in the island's size increasing to 1,000 acres. the island remains this size, vegetation quickly spreads, and the mouse population grows, doubling in size each year for three straight years. however, the hawk populations expand too. from the fourth year until the present, the death rate of the mouse population has been equal to the birth rate. which of the following statements about this population of mice is true?
The small population of mice living on the island will have a certain carrying capacity. As the size of the island increased the mice will first expand the population but as the population of the hawk increases it will keep in check the population of the mice and also the carrying capacity of the environment is reached hence it will remain same and not increase any more.
Birth rate is the total number of individuals born in a population in a certain period of time.
Death rate the is total number of individual that died in a population in a given period of time.
Carrying capacity is a maximum population that a particular ecosystem can sustain and provide resources for utilization.
The carrying capacity for the mice was 10 mice per acre before the change in the island size which changed to 8 mice per acre when the area of the island increased.
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Under what circumstances could ions flow through an ion channel from a region of lower ion concentration to a region of higher ion concentration?
Active transport is used by the cells for the accumulation of required molecules. This type of transport is energy-dependent. The movement of molecules is against the gradient.
What is Active Transport?Active transport is the movement of molecules or ions across the cell membrane from its lower concentration to its higher concentration. This movement is favored by energy in the form of ATP.
The two main types of active transport includes: Primary Active Transport and Secondary Active Transport. Primary Active Transport involves the direct use of ATP while the Secondary Active Transport involves coupling of molecules with other molecules moving along an electrochemical gradient.
Therefore, Active transport is involved in the movement of substances against the concentration gradient.
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What is the mean number of clams per sample?
Answer:
Is there more to this question?
Explanation:
The mean number of clams per sample is the average quantity of clams across all collected samples.
To calculate the mean number of clams per sample, sum up the total number of clams from all samples and then divide by the total number of samples. This provides an overall average representation of clams in each sample.
Mean serves as a measure of central tendency, providing insight into the typical clam count. It helps researchers understand the general clam population, aiding in statistical analysis and drawing meaningful conclusions. Mean offers a balanced view of the distribution, accounting for both large and small clam counts.
In ecological or scientific studies, understanding the mean number of organisms per sample assists in assessing population health, resource availability, and ecological dynamics, offering a snapshot of the studied ecosystem's condition and stability.
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which property of water helps maintain the temperature of earth
Answer: specific heat
Water regulates temperatures on Earth. The ability of water to stabilize temperature depends on its relatively high specific heat. The specific heat of a substance is defined as the amount of heat that must be absorbed or lost for 1 gram of that substance to change its temperature by 1 degree Celsius.
Explanation:
(bill nye workseet : measurements) qu. 5) the more we want to know, the more ___ we make
Bill nye worksheet quote The more we want to know, the more mistakes we make.
The greater that study, the more places you will cross. This quote is probably considered one of my favorites. In I'm able to examine With My Eyes shut, Seuss informs readers on how magical and important reading may be. The quote is pretty self-explanatory; reading is the key to achievement.
Studying is important and serves as a fundamental constructing block for quote knowledge, regardless of the college difficulty, be it language arts or maybe math. In daily lifestyles, the need to examine matters which include avenue symptoms or prescriptions proves analyzing is also an important life ability.
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How many molecules of DNA are in the prometaphase drawing? How many molecules per chromosome? How many double helices are there per chromosome? Per chromatid?
There are 12 molecules of DNA in the prometaphase of mitosis, 2 moles of DNA per chromosomes, 2 DNA double helices per chromosomes and 1 DNA per chromatid.
Prometaphase is the eukaryotic cell division stage that occurs between prophase and metaphase. The cell's chromosomes have compacted during prophase, and the centrosome, or microtubule organizing center, has split and relocated to opposing ends of the cell. Several important events occur during prometaphase, including the disintegration of the nuclear envelope and the attachment of microtubules to each chromosome.
Proteins that remove certain compounds from nuclear membranes are released at the start of prometaphase. The membranes disintegrate in the absence of the chemical. They will be re-joined before the cell is totally split into two new cells during telophase.
The breakdown of the nuclear membrane permits microtubules to bind to the chromosomes. Sister chromatids can bind to one other because chromosomes have unique areas associated with proteins. These areas are referred to as centromeres. Each chromosome's centromere has other specialized regions called kinetochores that facilitate microtubule attachment. Microtubules, which originate in the centrosomes at each end of the cell, form a matrix known as the spindle apparatus that runs throughout the cell.
Microtubules of various sorts are found in the spindle apparatus. The kinetochore microtubules go from one side of the chromosome to the other. Motor proteins have the ability to transport things along microtubules. Furthermore, the microtubule organizing center, or centrosome, can add or remove monomers from the microtubule, so increasing or decreasing its total length.
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If you removed the ZPA from a limb bud and then placed a bead soaked in Sonic hedgehog in the middle of the bud, what would be the most likely result?
Imagine planting a Sonic Hedgehog bead in the center of the bud after it has been wet. The developing limb in that instance would most likely be a mirror-image duplicate, with the most anterior digits at each end and the most posterior digits in the middle. As a result, a mirror-image duplicate would arise.
A complex signaling network that regulates tightly regulated developmental processes in multicellular organisms is the Sonic Hedgehog (Shh) signaling cascade. Lower concentrations of Shh in a bead will result in a reaction like that seen after a tissue transplant.
Let's say a mirror-image limb is produced when the Sonic Hedgehog is injected into the front portion of a conventional limb bud. The studies with mice also demonstrate that the sonic hedgehog can produce additional toes in a region of the limb bud where it is often absent.
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Suppose a bird and a human both have gout. Why might reducing purine in their diets help the human much more than the bird?
Purine breakdown in humans produces uric acid, hence lowering purines in the diet frequently lessens the severity of the condition. However, uric acid is a by product of general nitrogen metabolism in birds. Because of this, they will require a diet low in all nitrogen-containing substances, not only purines.
Your body creates and degrades purines as well. Normally, your kidneys and urine serve as filters for uric acid in your body. Uric acid can accumulate in your blood if you eat too much purine or if your body can't get rid of this by product quickly enough.The hepatic enzyme urate oxidase (uricase) converts uric acid, a by product of purine metabolism, into the more highly soluble allantoin that is freely expelled in urine in most mammals.To know more about metabolism visit:
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MIkhail is trying a new cookie recipe. He wants to see if the amount of baking powder he used will make the cookies rise more, He makes three batches of cookies and changes the amount of baking powder for each batch.
1.what is the independent variable?
2.what is the dependent variable?
3.what are 2 things that must remain constant for this experiment?
Answer:
Independent variable is the one that is being chanted, which is the baking powder,
Dependent variable is the variable affected by the change, which is if the cookies will rise more
2 things that must remain constant for this experiment, is the temperature of the room, and the baking powder (you could make these up, for example you could say they have to be made in the same environment, and so on)
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day :)
The measurements taken at Mauna Loa represent average atmospheric CO₂ concentrations for the Northern Hemisphere. Suppose you could measure CO₂ concentrations under similar conditions in the Southern Hemisphere. What pattern would you expect to see in those measurements over the course of a year? Explain.
The CO2 concentrations would be lowest in April-May and highest in September-October.
The Northern Hemisphere has an atmospheric carbon dioxide (CO2) concentration that is roughly 3 ppmv higher than the Southern Hemisphere. In this study, a box model that makes the carbon cycle easier to understand is used to discuss the cause of this disparity.
As a result of the majority of CO2 sources (such as vegetation and fossil fuel burning facilities) being concentrated in the north and the majority of CO2 "sinks" (such as seas) being concentrated in the south, the northern hemisphere has higher levels of carbon dioxide.
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Which bacterium is utilized from synthesizing human insulin through recombinant deoxyribonucleic acid (dna) technology?
The bacterium E. coli is utilized for synthesizing human insulin through recombinant deoxyribonucleic acid (DNA) technology.
What is Recombinant DNA technology?Recombinant DNA technology involves the complete methodology of fastening DNA molecules from two different sources and inserting them into a host organism in order to generate products for human use.
Human insulin is synthesized by the action of recombinant DNA within bacteria known as Escherichia coli, which is a Gram-negative, facultatively anaerobic, rod-shaped, coliform bacterium.
The cloned synthetic genes for human insulin A and B are fused to the B-galactosidase gene of E. coli in order to deliver efficient transcription and translation to form a stable protein.
Therefore, the bacterium E. coli is utilized for synthesizing human insulin through recombinant deoxyribonucleic acid (DNA) technology.
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The dimples trait exhibits strict dominant-recessive inheritance. therefore, how many phenotypes are possible for this trait?
The dimples trait exhibits strict dominant-recessive inheritance. therefore, two phenotypes are possible for this trait.
If you have dimples, chances are good that you inherited them from one of your parents. Dimples are caused by a small indentation in the muscle that controls the cheek. This indentation is usually present at birth and is thought to be caused by a genetic mutation.
Dimples are considered to be a dominant trait, meaning that if one parent has dimples, there is a good chance that their children will also have dimples. In fact, the dimples trait exhibits strict dominant-recessive inheritance, which means that two phenotypes are possible for this trait: either you have dimples or you don't. However, if both parents have dimples, then their children will also have dimples.
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The supporting infrastructure for the brain to carry out its directives and relay essential information includes?
The supporting infrastructure for the brain to carry out its directives and relay essential information is neuron.
What is the supporting infrastructure for the brain to carry out its directives?The supporting infrastructure for the brain to carry out its directives and relay essential information is neurons which is spread throughout the body like a network. The main function of neuron is to built the connection from the brain to the whole body of an organism.
The spinal cord is also very important part which connects the upper part of the body brain with the lower part of the body. The spinal cord is very important part of central nervous system which gives and receives the commands from the sensory neurons.
So we can conclude that the supporting infrastructure for the brain to carry out its directives and relay essential information is neuron.
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which branch of biotechnology involves the use of biological processes as part of chemical production
Answer:
White biotechnology involves the use of biological processes as part of chemical production.
Explanation:
White biotechnology, also known as industrial biotechnology, focuses on utilizing live cells as well as enzymes to develop products that may be readily broken down, produce less waste, and use less energy throughout manufacture. Utilizing microorganisms to produce chemicals, creating new polymers and fabrics, and creating new, renewable energy sources like biofuels are examples of white biotech. Enzymes and microbes are used in white biotechnology to create significant compounds from renewable energy. Moreover, white biotechnology offers useful ingredients for the food, medicinal, and agricultural sectors to some other industries. The benefits of biotechnology benefiting health and medicine are what makes it so significant. Scientists have developed new medications using genetic engineering, or even the carefully controlled change of genetic material, such as synthetic insulin, hormones for growth etc.
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What is carbon presented as in the atmosphere?
Answer: Carbon dioxide
Explanation:
We can represent atoms by listing the number of protons, neutrons, and electrons-for example, 2p⁺, 2n⁰, 2e⁻ for helium. Which of the following represents the ¹⁸O isotope of oxygen? a. 7p⁺, 2n⁰, 9 e⁻ b. 8p⁺, 10n⁰, 8 e⁻ c. 9p⁺, 9n⁰, 9 e⁻ d. 10p⁺, 8 n⁰, 9 e⁻
We can represent the number of electron, protons and neutrons in O18 isotope of oxygen as 8p+, 10n0, 8e-.
Isotopes are the elements that have same number of electrons and protons but different number of neutrons. For example oxygen have three isotopes three isotopes O18, O17, and O16. Each of the isotope have same number of electrons and protons i.e. 8 but have eight, nine and ten neutrons.
The number of electron and protons are always equal in an atom. So the number of neutrons can be found out by subtracting the atomic mass with the number of protons or electrons.
Hence the option 8p+, 10n0, 8e- is the correct option.
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Return to Figure 7.9 , and circle a patch of plasma membrane that is coming from a vesicle involved in exocytosis.
Exocytosis is an active transport through which different substances are taken in vesicles to the cell membrane and expelled to the extracellular space. Vesicle membrane and cell membrane fuse during this process.
What is exocytosis?
Exocytosis is an active transport process that involves vesicles or vacuoles.
During this process, secretion compounds accumulate within the vesicle and migrate toward the plasmatic membrane.
Secretion compounds might be exportation molecules or cell wastes.
Once the vesicle reaches the cellular surface, its membrane fuses with the cellular membrane through lipidic rearrangement, and its content is expelled from the cell to the exterior.
In the attached files you will find Figure 7.9 and the patch of plasma membrane that is coming from a vesicle involved in exocytosis.
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Jenny sees that her mom smokes a cigarette to relax whenever she gets stressed, so she thinks that it will work for her too. this is an example of?
Jenny sees that her mom smokes a cigarette to relax whenever she gets stressed, so she thinks that it will work for her too. This is an example of
social learning.
In the field of psychology, social learning can be described as a theory that represents that a person learns a certain action by observing and mimicking it from others. The cognitive process of learning causes a person to observe others and replicate what they are doing.
For social learning, a person carefully observes what the other person is doing, has the ability to remember the behavior and reproduce it by themselves. The person is motivated that a certain action will benefit him in some way.
In the scenario above, Jenny observes that her mother gets relaxed after smoking a cigarette. Jenny wants to copy this action herself in order to get relaxed in stress situations, hence this is an example of social learning.
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The sickle-cell allele most likely originated when a mutation occurred in a normal hemoglobin allele. If the trait arose in africa, where did it most likely originate?.
The sickle-cell allele most likely developed close to Kinshasa (in Congo).
Since the mutation was first discovered in Congo around Kinshasa, heterozygous persons who had it had a higher probability of surviving. These people lived, reproduced more successfully, and via migration disseminated the mutation both inside and outside of that specific community. The mutation that occured via sickle-cell allele allowed to develop a resistance against malarial parasites and thus had better chances of survival.
At a certain genomic region, an allele is one of two or more variations of the DNA sequence (a single base or a segment of nucleotides). For each genomic region with such variation, an individual inherits two alleles, one from each parent. The person is homozygous for the allele if the two alleles are the same.
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What is paleopathology?
A) The study of how primates such as apes and monkeys are related to the
development of human beings.
B) The study of human of skeletons to determine the presence of disease or
injuries.
C) The scientific study of the human skeleton.
D)The study of the development of life on earth including plants and animals.
Answer:
B) The study of human of skeletons to determine the presence of disease or injuries.
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5.if a farmer sprays a pesticide in a field and kills half of the insect pests, he has caused a reduction ________.
If a farmer sprays a pesticide in a field and kills half of the insect pests, he has caused a reduction in population size.
In the field of ecology, we can describe population size as the number of organisms of a species in a population.
The population size of a species will increase if the conditions in an ecosystem are favorable for its survival. The population size of a species will decrease if the conditions in an ecosystem are no longer favorable for its survival.
Pesticides are chemicals that are used for the killing of pests in a field. When a farmer sprays a pesticide, which results in the population of an insect pest reducing to half, then this means that the population size of the insect pest has decreased or reduced.
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The membrane-bound organelle that contains enzymes and oxygen used to oxidize organic material is the.
The membrane-bound organelle that contains enzymes and oxygen used to oxidize organic material is the Peroxisomes.
Peroxisomes are organelles that include a variety of oxidative processes and are crucial for metabolism, the detoxification of reactive oxygen species, and signalling. Fatty acid -oxidation is one of the β-oxidative pathways housed in peroxisomes and is involved in embryogenesis, seedling growth, and stomatal opening.
The impairment of peroxisome function is caused by a diverse range of inborn metabolic abnormalities known as peroxisomal diseases. Most frequently, this leads to varied degrees of neurologic impairment. Here, the main peroxisomal diseases will be discussed.
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researchers investigating the regulation of neurotransmitter release from presynaptic neurons proposed a model
Researchers investigating the regulation of neurotransmitter release from presynaptic neurons proposed a model is GFP* contained in synaptic vesicles moved into the synaptic cleft by exocytosis.
To move chemical messages from one neuron to the following target cell is their function. The following target cell may be a gland, muscle, or another nerve cell.A postsynaptic neuron sends signals away from the synapse, whereas a presynaptic neuron sends signals toward a synapse. The synapse, a juncture where the terminal end of an axon touches another neuron, is where information is transmitted from one neuron to another.Similar to other organelles, synaptic vesicles have related membrane proteins such synapsins, cysteine string proteins, and rab proteins as well as monotopic and polytopic proteins. It is striking how many proteins in synaptic vesicles have four transmembrane areas.To learn more about neurotransmitter.brainly.com/question/9556454
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If you cross rryy and rryy pea plants, what percent of the offspring will have round yellow peas? r=round, r=wrinkled, y=yellow, y=green
In complete dominance, the dominant allele always hides the expression of the recessive allele when both of them are present in the genotype. 50% of the progeny will have rounded and yellow peas.
What is complete dominance?
Complete dominance is one of the inheritance patterns. It is the interaction between two or more alleles of a gene.
When different alleles are composing the genotype (heterozygous) and one of them masks entirely the expression of the other allele, we talk about complete dominance.
Heterozygous individuals only express the phenotype coded by the dominant allele while the recessive allele remains hidden.
In thee xposed example we have two genes that express complete dominance, and we need to consider it when answering the question.
Gene for shape
Dominant allele → R → codes for rounded seedsRecessive allele → r → codes for wrinkled seedsGene for color
Dominant allele → Y → codes for yellow seedsRecessive allele → y → codes for green seeds
Cross: We need to cross two plants. One of them has rounded and yellow seeds. The other one has rounded and green seeds.
Parentals) RrYy x RRyy
Gametes) RY, rY, Ry, ry Ry, Ry, Ry, Ry
Punnett square) RY rY Ry ry
Ry RRYy RrYy RRyy Rryy
Ry RRYy RrYy RRyy Rryy
Ry RRYy RrYy RRyy Rryy
Ry RRYy RrYy RRyy Rryy
F1) Genotype
4/16 = 1/4 = 25% of the progeny is expected to be RRYy
4/16 = 1/4 = 25% of the progeny is expected to be RrYy
4/16 = 1/4 = 25% of the progeny is expected to be RRyy
4/16 = 1/4 = 25% of the progeny is expected to be RrYy
Phenotye
8/16 = 1/2 = 50% of the progeny is expected to have rounded and yellow seeds ⇒ R- Y-
8/16 = 1/2 = 50% of the progeny is expected to have rounded and green seeds ⇒ R- yy
50% of the progeny will have rounded and yellow peas.
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using an example, briefly explain why homeostasis often involves more than one body system
Answer:
your heart need your brain to tell it to pump but your brain needs blood from your heart to tell it to pump
Explanation:
The brain must signal to the heart to beat nonetheless, the heart must pump the blood for the brain to receive the signal.
What is homeostasis?Any self-regulating mechanism called homeostasis helps biological systems maintain stability while responding to environmental factors that are best for survival. If homeostasis is achieved, life goes on; if it is not, tragedy or death results. The stability obtained is actually a dynamic equilibrium, where circumstances are mostly uniform yet change is constant.
Any system that is in dynamic equilibrium will eventually establish a stable balance that is resistant to external pressures of change. When such a system is upset, built-in regulatory mechanisms react to the deviations to restore equilibrium; this is an example of feedback regulation. Examples of homeostatic control include all integration and coordination activities, whether they are carried out by electrical circuits, neurological systems, or hormonal systems.
The operation of a thermostat, also known as a room-temperature regulator, is a well-known illustration of homeostatic control in a mechanical system. A bimetallic strip at the thermostat's core completes or breaks an electric circuit in response to temperature fluctuations.
The circuit is closed as the chamber cools, the furnace fires up, and the temperature rises. The circuit breaks, the furnace shuts off, and the temperature falls to a certain level. In comparison to such mechanical devices, biological systems are more complicated and contain regulators that are only loosely analogous.
Therefore, the brain must signal to the heart to beat nonetheless, the heart must pump the blood for the brain to receive the signal.
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Many viruses are pathogens of animals and plants (see Concept 19.3). How might the presence of pathogens alter the carrying capacity of a population? Explain.
The effects of pathogens may raise the risk of sickness and mortality if a community is overcrowded. Thus, diseases can lower a population's long-term carrying capacity.
What exactly do pathogens mean?A pathogen is an organism that causes disease in its host, and virulence describes how severe a disease's symptoms are.. Pathogens include viruses, bacteria, unicellular and multicellular eukaryotes, as well as other taxonomically diverse organisms.
Which three pathogens are examples?Pathogens are organisms that infect the body and can harm health. They include viruses, bacteria, fungus, and parasites. The pathogens that cause significant diseases include, among many others, anthrax, HIV, the Epstein-Barr virus, and the Zika virus.
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A fishing spider walks along the surface of water to hunt for tadpoles.
Which characteristic of water does the spider take advantage of?
A. adhesion
B. hydrogen bonds
C. universal solvent
D. cohesion
Answer: D. Cohesion
Explanation:
I took the test. Have a lovely day folks <3
Answer:
Just took the test got a 5/5 on it.
Explanation:
Picture down bellow
WRITE ABOUT A THEME: INTERACTIONS Organisms interact with each other and the physical environment. In a short essay (100-150 words), explain how the response of diatom populations to a drop in nutrient availability can affect both other organisms and aspects of the physical environment (such as carbon dioxide concentrations).
Diatoms are single-celled algae that form distinctive and beautiful cell walls from silica. They are widely distributed throughout the upper layers of the world's oceans, and can also be found in freshwater or humid environments such as the underside of plants. When nutrients are plentiful, large diatoms predominate at the trophic level of the producer, and copepods replace their diet of ciliated protists with diatoms. When nutrient levels are low, the proliferation of small algae outnumbers that of large diatoms, so copepods switch their diet and switch to feeding on ciliates.
What is the main characteristic of diatoms?The main morphological characteristic of diatoms is the cell wall impregnated with silica (SIO2. nH2O), surrounded by a thin layer of organic matter, known as FRUSTULA.
Whit this information we can conclude that When nutrient levels are low, the proliferation of small algae outnumbers that of large diatoms, so copepods switch their diet and switch to feeding on ciliates.
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Explain how the code in your dna relates to your physical appearance as well as the functioning of your body. How might a change in this code impact the body?.
The code in our DNA relates to our physical appearance as well as functioning because it makes the proteins of the body.
It is through the process of central dogma that the DNA transcribes into mRNA. Each mRNA transcript gets translated into different proteins having different functions to perform in the body.
It is due to the formation of these proteins that our physical appearance and functions in the body are maintained. For example, a part of the DNA will be coding for proteins that are structural proteins. These structural proteins maintain our appearance, structure, pigmentation, hair color and type etc. Other proteins would be involved in other functions such as antibodies for generating an immune response.
A change in the code of the DNA can lead to altered proteins being formed. The proteins made by changing of code will be different. A change in the code can lead to the occurrence of diseases.
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An athlete's cells can become too hot to function properly. Which of these processes will best return the cells to normal?
A
Cytokinesis
B
Endocytosis
C
Transpiration
D
Homeostasis