Answer:
Analogous structures are structures which serve similar function in different organisms and evolved independently in two living organisms while homologous structures are the structures which are similar in related orgnanism due to inheritance.
The wings of Pterodactyl, bats and birds are conisdered as analogous structure. they are similar in structure and same in function and evolved independently in the two groups of animals.
Bones in forelimbs of pterodactyl, bats and birds are considered homologous structures as they inherited the pattern from a common ancestor and have different functions.
Use the chart below to compare and the contrast the disposal methods of MSW in developed
and under-developed countries.
Developed Countries
Both
Under-developed Countries
Answer:
Municipal solid waste (MSW), is the type of waste that contain items related to everyday use.
Different countries have different ways to manage their Municipal solid waste (MSW), some of the techniques used by developed and under-developed countries are as following:
Developed Countries: Example of developed countries are Norway, Australia and USA et-cetra. Disposal methods used are:
Composting - decomposing organic solid wastes into humus.Sorting - In this method garbage is sorted or dumped in bins on the basis of their type such as paper, colored glass and white glass et-cetra.Both: Disposal methods used by both the countries are:
Incineration - disposal of waste through burning Landfills - MSW is placed in landfills apart from human contacts.Under-developed Countries: Example of under-Developed countries are India, Afghanistan and Algeria et-cetra. Disposal methods used are:
Open uncontrolled dumping - throwing waste in openWaste picking - waste pickers pick recyclable waste.Hence, there are some common and some different ways to dispose MSW in developed and under-developed countries.
You are studying a population of mice that fall into two size classes: small and large. You are curious if mouse size is under selection. You count the number of offspring born to small and large parents. Your results show that small parents have on average 6.2 offspring and large parents have 6.25 offspring. Does size seem to be under selection
Answer:
The information is not sufficient to support this asumption
Explanation:
To unequivocally determine the existence of selection acting on this trait (size), it is necessary to carry out an experiment in which the sample size should be statistically significant (N sample for each group > 50). Moreover, it is also important to include negative controls (i.e., individuals with an average size between both groups) in the experiment.
Requires the blackworms to incubate 2 min in the test solution. If the worms were accidentally incubated for 4 min, how would the results be affected?
a. The results would not be affected since the test chemicals are known to not affect the pulse rate of blackworms.
b. The results would not be affected since an incubation time of 2 min is simply a time-saving device.
c. The pulse rate would be markedly increased due to excessive absorption of the test solution.
d. The pulse rate would be severely depressed or absent due to death of the worms.
Answer: Option C.
Explanation:
Blackworms are organisms most effeciently used by scientists to study the effect of drugs on the circulatory system. They have a transparent skin which make it easier to observe pulse rate. Drugs easily diffused through the skin of blackworms which cause immediate effect and they are easy to maintain in the laboratory. When the blackworms are incubated with extra 2 minutes, their pulse rate will increased due to excessive absorption of the test solution.
Final answer:
If the blackworms were accidentally incubated for 4 minutes instead of the required 2 minutes, the pulse rate of the blackworms would be severely depressed or absent, possibly leading to the death of the worms.
Explanation:
If the blackworms were accidentally incubated for 4 minutes instead of the required 2 minutes in the test solution, it can affect the results. The correct option would be (d). The pulse rate of the blackworms would be severely depressed or absent due to the extended incubation time, possibly leading to the death of the worms. Incubation time is a crucial factor in experiments as it determines the amount of time for the reaction or process to occur.
Sound waves arriving at a listener first strike the
Answer:
OK not a question
Explanation:
Evolution is a process of ___
in a population through___
variation over ___.
Evolution involves ___
and ___.
Answer:
inheritable changesgeneticgenerationsI don't know about the second sentence, is it possible you give me a bit more of a context then maybe i can be of help
Answer:
Change
Genetic
Time
Change Over time
Decent from a common ancestor
Explanation:
I got it correct.
Often only small amounts of DNA are found at a crime scene. Which technique uses an enzyme to replicate DNA regions from a small sample of DNA for use in DNA fingerprinting?
Answer:
Polymerase chain reaction(PCR)
Explanation:
PCR is used to replicate the DNA into bigger amount until it is enough to be analyzed by different methods
Hope this helps you :)
Scientists have recently modified the bacteria that cause tooth decay by inserting a fragment of DNA into the bacteria's DNA that prevents it from producing lactic acid. What is the new DNA called?
Answer:
The correct answer would be A) genetic engineering.
Explanation:
The correct answer is A) genetic engineering.
The following information should be considered:
Genetic engineering defined the set of technologies that are applied manipulate the genes of an organism.It involved the isolation, cloning and transfer of of desired genes in to the host genomeLearn more: https://brainly.com/question/5763151?referrer=searchResults
For humans, freckles are dominant over not having freckles. Which offspring would not have freckles?
Select all that apply
A)
B)
C)
D)
Answer:
Explanation:
The only way a recessive trait will show is if the offspring receives 2 recessive (lower case) alleles.
If there are any upper case letters present only the dominant trait will show.
The correct answer would be the box(es) that contain 2 lower case letters.
A 33-year-old female long-distance runner typically finishes marathons in less than 3:15. She has recently moved from Nebraska (altitude less than 1,640 feet or 500 m) to Colorado (altitude above 9,843 feet or 3,000 m). What changes are likely to occur within the first three months of her move with regard to aerobic performance
Answer:
There is no short answer.
Explanation:
Athletes such as runners may prefer to train at higher altitudes than the altitude they perform at. This is because the higher altitude increases the number of red blood cells in the athletes body thus providing the muscles with more oxygen which increases performance.
If the runner moves from Nebraska to Colorado which is at a higher altitude, she will see an increase to her aerobic performance in the first three months.
I hope this answer helps.
Final answer:
Upon moving to a higher altitude in Colorado, the runner will likely experience hypoxia and an initial decrease in her aerobic performance. In response, her body will adapt by producing more red blood cells to increase oxygen transport, which may improve her endurance over time. She should expect acclimatization to take several weeks and should monitor for symptoms of high altitude sickness.
Explanation:
The 33-year-old female long-distance runner who has moved from Nebraska to Colorado will experience several physiological changes due to the increase in altitude, which can affect her aerobic performance. At higher altitudes, the air is thinner and contains fewer oxygen molecules per breath. This can lead to a condition known as hypoxia, where the body does not receive enough oxygen. Initially, her marathon times may worsen as her body acclimates to these conditions. However, over the first three months, her body will begin to adapt by producing more red blood cells, which carry oxygen to the muscles and other tissues. This adaptation is a common strategy for endurance athletes to improve performance, though it may take several weeks or more to see significant improvements in her running times. While she is likely to experience an initial drop in her performance due to the reduced oxygen availability, she may ultimately benefit from the altitude acclimation once the body adjusts.
During the acclimation period, she might also endure symptoms consistent with high altitude sickness such as increased heart rate, possibly nausea, and headaches. These symptoms should lessen as her body gets used to the higher elevation. Staying well-hydrated and giving herself time to adjust before engaging in intense physical activity can help mitigate these effects.
It's important to note that while training at high altitude can potentially improve her performance at lower altitudes, she should consult with a sports physician to optimize her training plans and ensure safe acclimatization. Close monitoring of her body's response during this period is crucial for her health and performance outcomes.
Identify all the true statements. In the liver, stimulation of the glucagon receptor leads to activation of glycogen phosphorylase. activation of insulin receptor kinase. activation of PKA (cAMP‑dependent protein kinase). conversion of ATP to cAMP. activation of fructose 1,6‑bisphosphatase (FBPase‑1). activation of phosphofructokinase‑2 (PFK‑2).
Answer:
-activation of glycogen phosphorylase
-activation of PKA (cAMP‑dependent protein kinase)
-conversion of ATP to cAMP
-activation of fructose 1,6‑bisphosphatase (FBPase‑1)
Explanation:
The binding of glucagon to its receptors affects the production of glucose in the liver. Once the glucagon receptors are activated, it leads to the activation of adenylate cyclase in which in turn increases the levels of cAMP (cyclic AMP) conversion from ATP. The increased level of cAMP then activates PKA (protein kinase A). PKA results in the phosphorylation of pyruvate kinase which results to the activation of fructose 1,6‑bisphosphatase (FBPase‑1) which results to decrease in glycolysis.
Furthermore, PKA activates phosphorylase kinase which results to the activation of glycogen phosphorylase and hence glycogenolysis. Glycogenolysis occurs when Glucose-1- phosphate is then released from glycogen. PKA also inhibits the action of glycogen synthase.
In a certain plant, fruit color is affected by an epistatic interaction between two genes. The fruit is red in the presence of at least one dominant allele of either or both gene A or gene B, and white when there are no dominant alleles present. What proportion of the offspring of a cross of AaBb x AaBb plants is expected to be red
Answer:
15/16 or 93.75%
Explanation:
The proportion of the offspring of the cross expected to be red would be 15/16 or an equivalence of 93.75%.
Red fruit color is conditioned by the presence of A_, B_ or A_B_ alleles. In the absence of both dominant alleles, the condition is white. AaBb was crossed with AaBb.
AaBb x AaBb
Progeny' Genotype Phenotype
1 AABB red
2 AABb red
2 AaBB red
4 AaBb red
1 AAbb red
2 Aabb red
1 aaBB red
2 aaBb red
1 aabb white
Hence, the proportion of the offspring that are expected to be red is 15/16 or 93.75%.
See the attached image for the Punnet's square analysis of the cross.
Forests help to regulate the global climate by
A.) releasing oxygen
B.) preventing soil erosion
C.) emitting ozone
D.) absorbing carbon dioxide
Answer:
Absorbing carbon dioxide
Forests help regulate the global climate by absorbing carbon dioxide and releasing oxygen through photosynthesis.
Explanation:Forests help to regulate the global climate by absorbing carbon dioxide. They act as carbon sinks, taking in carbon dioxide from the atmosphere during photosynthesis and storing it in their biomass and soil. This helps to reduce the concentration of greenhouse gases, mitigating climate change.
In addition to absorbing carbon dioxide, forests also play a crucial role in releasing oxygen through the process of photosynthesis. They are often referred to as the 'lungs of the Earth' because they produce a significant amount of the oxygen we breathe.
While preventing soil erosion and emitting ozone are important functions of forests, they are not directly related to regulating the global climate.
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g 3-month-old male presents to the pediatrician's office for a well-child check. Physical examination reveals many bruises on his body and eczema of the scalp and face. Laboratory analysis shows high levels of IgE and IgA. A complete blood count is remarkable for thrombocytopenia. DNA analysis reveals a mutation in the WAS gene. What is the most likely diagnosis
Answer:
Wiskott-Aldrich Syndrome(WAS)
Reason- It is a rare X-linked recessive disease characterized by eczema, thrombocytopenia, suppresed immunity and bloody in diarrhoea.WAS occurs due to mutations in a gene on the short arm of the X chromosome.
Diagnosis:- It been diagnosed on the basis of peripheral blood smear and low IgM levels.
Treatment:- There is no definite treatment present. It is based on the basis of treating the symptoms. Child is advised to wear helmet to prevent bleed in the brain. Gene therapy is also a option at a smaller age.
In garden peas, tall plants (T) are dominant to short plants (t), and round pods (R) are dominant to constricted pods (r). A true breeding, homozygous tall plant with round pods (TTRR) was crossed with a true-breeding short plant with constricted pods (ttrr). All F1 plants were tall with round pods (TtRr). When the F1 plants were crossed, the F2 generation contain 75 tall/round and 25 short/constricted plants. What can you conclude about the chromosomal location(s) of these genes
Answer:
Based on the given information, the study of different varieties of the garden pea was done, that is, tall plants with round pods having homozygous genotype TTRR, and the short plants with constricted pods having homozygous genotype ttrr. Post crossing the mentioned varieties of garden pea, the F1 generation comprises tall plants with round pods having the genotype TtRr. While when the crossing of F1 generation plants was done, the plants obtained in the F2 generation demonstrated the phenotype, that is, tall plants with round pods, which is 75 in number and short plants with constricted pods, which is 24 in number.
This shows that the genes would have been the linked genes, as they would have been situated very close together on the homologous chromosomes, and because of this linkage, the expression of the genes would have taken together.
In case, if there was no linkage, then the genes would have assorted independently, and the offspring produced in the F2 generation would have shown the phenotypic ratio with the features of tall plants with round pods (9), short plants with round pods (3), tall plants with constricted pods (3), and short plants with constricted pods (1).
Though the above-mentioned situation did not occur and the plants obtained in the F2 generation demonstrated the phenotype, that is, tall plants with round pods, which is 75 in number and short plants with constricted pods, which is 24 in number. This further puts more emphasis on the fact that the genes for both the phenotypes were linked due to which expression of only the mentioned two varieties took place and the other two failed to do so.
Meiosis produces what types of cells? A. nerve cells B. muscle cells C. egg and sperm cells D. white and red blood cells
Fill in the blank with the correct word or phrase.
Darwin proposed a new theory of how evolution works, which he called
------------------------------
whats in the blank
Answer:
the answer is "natural selection"
Explanation:
Natural selection or "Option A"
A snapdragon plant that bred true for white petals was crossed with a plant that bred true for purple petals, and all the F1 had white petals. The F1 were selfed. Among the F2, three phenotypes were seen: solid purple: 61 white: 240 spotted-purple 19. If two spotted-purple plants from the F2 generation were crossed, what would be the phenotypic ratio of the offspring
Final answer:
If two spotted-purple snapdragon plants are crossed, the expected phenotypic ratio would be 1 solid purple: 2 spotted-purple: 1 white, assuming spotted-purple is a result of heterozygous genotype.
Explanation:
If two spotted-purple snapdragon plants from the F2 generation were crossed, the phenotypic ratio of their offspring can be predicted using Mendelian genetics, but with incomplete dominance or co-dominance since we have a spotted phenotype. Assuming that the spotted-purple phenotype results from a heterozygous condition, we can denote the purple allele as 'P' and white allele as 'W'. The spotted condition could be represented by the genotype 'PW'.
When two spotted-purple plants are crossed (PW x PW), the possible genotypes of the offspring could be PP (solid purple), PW (spotted-purple), and WW (white). According to the Punnett square, the genotypic ratio would be 1 PP : 2 PW : 1 WW. Therefore, the expected phenotypic ratio would be 1 solid purple : 2 spotted-purple : 1 white.
This example showcases an inheritance pattern where three phenotypes are expressed, indicating a more complex form of inheritance than the simple dominant-recessive pattern that Gregor Mendel observed in his pea plant experiments, where typically only two phenotypes are seen.
In a balanced forest ecosystem a disease killed many of the rodents. Which of the following is most likely to occur after this happens?
.
The numbers of owls will decrease
The amount of plants will decrease
The insect population will decrease.
Answer:
The numbers of owls will decrease
Explanation:
The numbers of owls will decrease because there are no rodents to feed them. Plant and insect populations will increase because there are no rodents to control their populations.
The water cycle is driven by energy from the sun and?
Final answer:
The energy from the sun and gravity drive the water cycle, which includes the processes of evaporation, condensation, precipitation, and runoff as water moves through various Earth systems.
Explanation:
The water cycle is driven by energy from the sun and gravity. The sun's energy warms the oceans and surface waters, leading to evaporation (water turning into water vapor) and sublimation (ice turning into water vapor). This water vapor then condenses into clouds and eventually precipitates as rain or snow, returning to the Earth's surface. Gravity plays a crucial role in pulling this precipitation back to the ground and also in driving the water through runoff, rivers, and streams back toward the oceans. Additionally, water can percolate into the ground, becoming groundwater, which also contributes to the movement of water in the cycle.
You are studying a large flock of chickens and divide it into two halves. Each half contains the same genetic variations at the same frequencies as in the other half. To one half (the control group) you feed normal chicken chow, to the other half (the experimental group) you feed normal chicken chow supplemented with a nutritional booster. As expected, in the experimental group the hens lay an average number of eggs greater than those in the control group. Yet the heritability remains the same in both the experimental and control groups. You can explain this observation by hypothesizing that the variation in nutrition among hens is, select one of the options below and justify your answer.
A. smaller in the experimental group.
B. larger in the experimental group.
C. the same in both groups.
D. smaller in the control group.
E. larger in the control group.
Answer:
The answer is B.
Explanation:
We can explain why the hens in the experimental group which received the chow with the nutritional booster lay more eggs on average than the hens in the control group with the option B. The variation in nutrition among hens is larger in the second group which is the experimental group and this leads to the difference in the number of average eggs. It does not affect heritability which should be the same in both groups.
I hope this answer helps.
True or False: Blood is essential to homeostasis. *
True
False
Answer:
True
Explanation:
Answer:
true
Explanation:
The body eliminates nitrogenous waste through urine which is important for maintaining homeostasis in the body. The urinary system also helps control blood pressure by regulating the amount of fluid and ions in the body. Also, the kidneys produce the hormone erythropoietin which stimulates red blood cell production in the bone marrow.
A mutation occurs in a sequence of DNA. How could the DNA mutation affect the protein produced? A. The chromosomes in the protein could be changed. B. The structure of the protein could be changed. C. The mutation could change every protein in the cell. D. The protein would cause other proteins to mutate.
Answer:
The answer is B.
Explanation:
Because the DNA controls the protein structure.
Answer:
B. The structure of the protein could be changed.
Explanation:
The mutation in the DNA, like other mutations, would affect the protein structure.
Can you match each example with the science that supports it? The statements on the left are scientific assertions. The statements on the right are examples from the chapter. Drag each scientific assertion to the example it best supports. ResetHelp A healthy body weight increases fertility. Members of a homologous pair must align with each other at meiosis II for healthy gametes to be produced. Drug and alcohol consumption decreases male fertility. Sexually transmitted infections can cause infertility. Women are fertile from puberty until they permanently stop menstruating. Developmental issues can affect fertility. A couple's chances of achieving a pregnancy are reduced by smoking cigarettes. Exposure to toxins in cigarette smoke is thought to prematurely deplete the supply of eggs in the ovary. returned
The following statements are supported by scientific evidence :
- Members of a homologous pair must align with each other at meiosis II for healthy gametes to be produced. The normal cell division cycle (mitosis) is critical in development.
- Drug and alcohol consumption decreases male fertility. Drugs and alcohol may affect the menstrual cycle.
-Sexually transmitted infections can cause infertility. Chlamydia and gonorrhea are sexually transmitted infections that cause infertility.
- Women are fertile from puberty until they permanently stop menstruating. Menopause represents the initiation of the infertile period in women.
-Developmental issues can affect fertility. Developmental disorders may affect the reproductive system and consequently affect the fertility.
-A couple's chances of achieving a pregnancy are reduced by smoking cigarettes. Cigarettes may reduce fertility in women.
A healthy body weight increases fertility, drug and alcohol consumption decreases male fertility, sexually transmitted infections can cause infertility.
Explanation:
A healthy body weight increases fertility can be supported by the example of exposure to toxins in cigarette smoke is thought to prematurely deplete the supply of eggs in the ovary. Similarly, drug and alcohol consumption decreases male fertility can be supported by the example of a couple's chances of achieving a pregnancy are reduced by smoking cigarettes. Additionally, sexually transmitted infections can cause infertility can be supported by the example of developmental issues can affect fertility.
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Differentiate between population density and
population distribution.
Answer:
Explanation:
Population density just represents the average number of individuals per unit of area. Usually, individuals of a certain population are not spread out evenly.
Population distribution describes how the individuals are distributed or spread throughout their habitat, and their most concentrated areas (where you can find a lot of them, ex. humans in the city)
Answer:
Population density is the number of individuals in a population per unit area.
Population distribution is the pattern in which individuals in a population are dispersed in an area.
Explanation: answer on e2021
Complete hydrolysis of a nonapeptide gave 3 ala, 2 phe, 2 asp, gly, and ser. Reaction of the nonapeptide with Sanger's reagent (1-fluoro-2,4-dinitrobenzene) followed by hydrolysis gave N-(2,4-dinitrophenyl) alanine. Partial hydrolysis of the nonapeptide gave the following fragments: gly-ala-phe ala-asp-gly-ala phe-ser-ala ser-ala-phe-asp. Which one of the following is the nonapeptide's pripary structure? A) ala-asp-gly-ala-asp-ala-phe-sor-phe B) ala-asp-gly-ala-phe-ser-ala-phe-b C) ala-phe-asp-gly-ala-asp-ser-phe-ala D) gly-ala-phe-ser-ala-phe-asp-asp-ala
Answer:
Alanine is obtained as the first amino acid, taking into account that the reaction with the Sanger reagent hydrolyzes N- (2,4-dinitrophenyl) alanine. thus with the fragments of the partial hydrolysis they are organized to create a polypetidic chain
ala-asp-gly-ala
gly-ala-phe
phe-be-wing
be-wing-phe-asp
We obtain that the correct sequence of the peptide is "ala-asp-gly-ala-phe-ser-ala-phe-asp"
The primary structure of the nonapeptide is gly-ala-phe-ser-ala-phe-asp-asp-ala, determined by the amino acid composition, Sanger's reagent labeling, and partial hydrolysis results.
Explanation:The primary structure of proteins is simply the sequence in which amino acids are connected by peptide bonds. In your question regarding the primary structure of the nonapeptide, we need to determine the correct sequence of amino acids based on the given information. You provided data from a complete hydrolysis, reaction with Sanger's reagent, and results from partial hydrolysis. Sanger's reagent specifically labels the N-terminal amino acid of the peptide, which in this case is alanine. By analyzing the partial hydrolysis results and the amino acid composition of the nonapeptide, we can deduce the sequence. Considering the consistency with the partial fragments and Sanger's reagent labeling, the correct primary structure of the nonapeptide is gly-ala-phe-ser-ala-phe-asp-asp-ala. This takes into account the counts of each amino acid, the N-terminal label, and the partial hydrolysis results, putting the unique amino acid, glycine, at the N-terminus as indicated by the reaction with Sanger's reagent.
Which of the following statements about hormones are correct? Hormones can be peptides, steroids, or amino acid derivatives. Hormones can stimulate the synthesis of target proteins through the activation of specific genes. Hormones can directly activate or inhibit enzymes through the action of signal molecules. Hormones can increase the cellular uptake of metabolites. View Available Hint(s) Which of the following statements about hormones are correct? Hormones can be peptides, steroids, or amino acid derivatives. Hormones can stimulate the synthesis of target proteins through the activation of specific genes. Hormones can directly activate or inhibit enzymes through the action of signal molecules. Hormones can increase the cellular uptake of metabolites. 1, 2, and 4 are correct. 1 and 2 are correct. 1, 2, and 3 are correct. All of the listed statements are correct. Provide Feedback
Answer:
Statements 1, 2 and 4 are correct:
"Hormones can be peptides, steroids, or amino acid derivatives."
"Hormones can stimulate the synthesis of target proteins through the activation of specific genes."
"Hormones can increase the cellular uptake of metabolites."
Explanation:
Hormones are basically proteins that are released under particular conditions to bring about a certain response in the body. They can activate genes and even change how cells respond to metabolites, for instance, insulin and glucagon are two hormones that regulate the level of sugar in the blood. Another example is the hormone adrenaline, which is released in the 'flight-or-fight' response to prepare the body in taking action.
Hope that answers the question, have a great day!
Moving water has been utilized in hydroelectric plants to _________________, but in recent years negative environmental consequences have become known.
A.
provide heat to buildings
B.
refine oil
C.
power train engines
D.
generate electricity
The correct answer is D. Generate electricity.
Explanation
A hydroelectric plant is a construction in which, as its name implies, the movement of water is used to generate electricity. These are located in the cause of a river, where they dam the river water, and allow it to follow its current through a complex of tunnels where the water acquires high pressures. Later, the water meets turbines that are moved by the energy that water brings, which generates that this synthetic energy is transformed into electricity. Therefore, the option that best completes the sentence of the question is D. Moving water has been used in hydroelectric plants to generate electricity, but in recent years negative environmental consequences have been known. The environmental damages of hydroelectric plants can be alteration of terrestrial, aquatic ecosystems and their biodiversity, it also generates changes in the river regime, alteration of natural flood cycles.
Match each term with its definition.
1) a DNA sequence located near the start of a gene that RNA polymerase binds to initiate transcription
2) a regulatory protein that blocks transcription by binding to the operator site
3) a transcriptional element that blocks the signal between enhancers and promoters
4) a gene that controls the expression of one or more genes by promoting or inhibiting transcription
5) a small molecule that activates transcription by inhibiting the action of a repressor protein
6) a short DNA sequence that can be recognized by a repressor protein
a) insulator
b) operator
c) repressor
d) inducer
e) regulatory gene
f) promoter
Answer:
The correct terms have been inserted before the description that matches it:
Promoter
1) a DNA sequence located near the start of a gene that RNA polymerase binds to initiate transcription
Repressor
2) a regulatory protein that blocks transcription by binding to the operator site
Insulator
3) a transcriptional element that blocks the signal between enhancers and promoters
Operator
4) a gene that controls the expression of one or more genes by promoting or inhibiting transcription
Inducer
5) a small molecule that activates transcription by inhibiting the action of a repressor protein
Regulatory Gene
6) a short DNA sequence that can be recognized by a repressor protein
Notice the difference between genes and proteins, it is by working together that the cell is able to control these functions. A defect in any of these could possibly prevent the normal functioning of the cell.
Hope that answers the question, have a great day!
The appropriate phrases have been added before the corresponding description: Promoter.
1.a DNA sequence that RNA polymerase attaches to at the beginning of a gene to start transcription repressor.
2) A regulatory protein that attaches to the operator site and prevents transcription insulator.
3) a transcriptional component that prevents enhancers and promoters from communicating with each other Operator.
4) a gene that promotes or inhibits transcription to regulate the expression of one or more genes inducers.
5) a little chemical that prevents a repressor protein from acting, activating transcription Regulatory Gene.
6) a short DNA sequence that can be recognized by a repressor protein.
Observe the distinction between genes and proteins; the cell's ability to regulate these processes is a result of their cooperation. Any one of these flaws could potentially stop the cell from operating normally.To match each term with its definition, we need to understand the basic elements involved in the regulation of transcription in DNA.
Promoter: A DNA sequence located near the start of a gene that RNA polymerase binds to initiate transcription.Repressor: A regulatory protein that blocks transcription by binding to the operator site.Insulator: A transcriptional element that blocks the signal between enhancers and promoters.Regulatory gene: A gene that controls the expression of one or more genes by promoting or inhibiting transcription.Inducer: A small molecule that activates transcription by inhibiting the action of a repressor protein.Operator: A short DNA sequence that can be recognized by a repressor protein.Each term plays a crucial role in controlling gene expression and ensuring the correct proteins are made at the right time in a cell.
1. In the autonomous motor system there is a 2-step connection (i.e., 2 neurons in series) from the brain to the target muscles. This is different from the somatic motor system (only 1 neuron). Please list and briefly explain which advantage(s) in control this 2-step process provides.
Answer:
The pathways of visceral efferent 2-neurons that innervate the smooth muscles and other effectors of the autonomic nervous system are the preganglion neuron and the post ganglion neuron. The cell body of the preganglion are in the CNS(spinal cord and brain stem) while the cell bodies of the post ganglion are located in the autonomic nervous system at the periphery of the CNS. The axon of the preganglion synapse with the dendrites of the postganglion, and with its cell bodies. This is different from one neuron directs innervation of somatic.
This 2-step arrangements. provides advantage of maximizing the space in the CNS, conserving it, so that the CNS is not congested, as theses neurons are pushed to the spacious peripheral part of the CNS.
Thus, action potential are diverged outwards from the preganglion neurons outwards into the periphery. Which conserve space allowing the tiny periphery neurons to be stimulated, with the aids of the diverged circuits.Although reducing brain control.
Explanation:
why is the moon white