Your teacher gives you this model of transcription. Choose the statement that best describes the role of DNA in transcription.
Answers
Answer:
C
Explanation:
A)
DNA directs the synthesis of RNA.
B)
DNA splits into two strands of RNA.
C)
A strand of DNA is used as a template for the formation of RNA.
D)
Two strands of RNA are formed by copying each of the strands of DNA.
The correct answer would be that a strand of DNA is used as a template for the formation of RNA.
Transcription is a process during which RNA is synthesized using DNA as a template. The coding strand of the DNA is utilized as a template for the formation of messenger RNA. During this process, the double helix structure of the DNA is unwound by an enzyme and the coding strand is bound by a short DNA strand at the beginning of a gene while another enzyme adds RNA nucleotide bases to elongate the short strand.
The correct option is C.
Answer:
C) A strand of DNA is used as a template for the formation of RNA
Explanation:
During transcription, a portion of the cell's DNA serves as a template for creation of an RNA molecule. (RNA, or ribonucleic acid, is chemically similar to DNA).
Related Questions
How do changes in the atmosphere from burning fossil fuels affect plant life? Select two correct answers
acid rain removes nutrients from soil.
Increased ozone levels slow plant growth.
Increased carbon dioxide levels support plant growth.
Increased nitrogen dioxide levels provide nutrients for plants.
Answers
Answer:
I'd Say A because it talks about slowing down the plants and removing stuff from the soil. Fire and smoke only cause problems for the surrounding area by blocking the sun and burning the ground, removing materials plants need for life. Then when it rains all the acidic stuff kills the ground as well.
Explanation:
Hope this helped.
A brainliest is always appreciated.
As per observation A as it talks approximately slowing down the flora and casting off stuff from the soil as acid rain removes nutrients from soil.
Fire and smoke handiest reason troubles for the encircling region via way of means of blockading the solar and burning the floor, casting off substances flora want for life. Then while it rains all of the acidic stuff kills the floor as well.
What is an ecosystem?An ecosystem is the layers of gases surrounding a planet or different celestial body. Earth's ecosystem consists of approximately 78% nitrogen, 21% oxygen, and one percentage different gases.
Thus it is well explained.
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Explain why biodiesel fuels have a different effect on atmospheric carbon levels than fossil fuels do?
Answers
Answer:
contains carbon that was recently present in the atmosphere rather than fossil-fuel carbon that was in the atmosphere long ago and has been sequestered beneath Earth's surface.
Explanation:
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Which statements about wind are true? Check all that apply.
Answers
Explain how DNA is semiconservation
Answers
explain importance of water potential gradient and osmosis in uptake and loss of water
Answers
Answer:
Mark Brainliest
Explanation:
If the water potential around the plant cell is high, water enters the cell via osmosis. (Movement of water molecules from a region of higher concentration to a region of lower concentration). Hence, the plant cell is turgid (swollen or full of water) now. Having a turgid plant cell is very important as turgidity of a cell prevents the plant from wilting as the cell is firm. Also, a turgid cell pushes the guard cells open (a flaccid cell doesn't as it is limp) and allows gas exchange for photosynthesis and respiration.
Both water potential gradient and osmosis are important for the overall development of plants.
What are the importance of water potential and osmosis in plants?For photosynthesis to occur, plants use water potential to move water to the leaves. The difference between the potential in a specific water sample and pure water is known as the "water potential," which is a measurement of the potential energy in water.
Osmosis aids in preserving the water content of plant cells. It is a technique that enables plants to retain water despite ongoing water loss. It gives the plant body's softer cells a turgidity. Water is absorbed by root hairs from the soil by osmosis. It regulates the movement of water from xylem components to surrounding cells.
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Which of the following is the type of cell division by which somatic cells divide?
Meiosis
Mitosis
Oogenesis
Spermatogenesis
Answers
12 Which of the following best describes
the energy change that occurs when a
stretched rubber band is
suddenly released?
(1) kinetic to potential
(2) mechanical to potential
(3) potential to kinetic
(4) kinetic to mechanical
Answers
how do the climate of region and water affect each other
Answers
Answer:
b. Many plants grow, because a lot of rain falls each year.
Explanation:
i hope this helps
A protozoan that can form a cyst would be well adapted for survival in..... (select all that apply) Select one or more: a. human blood b. the acidic pH of the stomach O c. dry soil lacking water or nutrients O d. d. a nutrient-rich pond
Answers
A protozoan that can form a cyst would be well adapted for survival in several environments. Cysts are protective structures that allow protozoans to withstand unfavorable conditions and enhance their survival chances.
The environments where a protozoan that can form a cyst would be well adapted for survival include:
a. Human blood: Protozoans that are capable of forming cysts can survive in human blood, which is a nutrient-rich environment for many types of protozoans. Forming a cyst allows them to protect themselves from host immune responses and other adverse conditions.
b. The acidic pH of the stomach: Protozoans that can form cysts may be able to survive the acidic pH of the stomach, which is a hostile environment for many organisms. The cyst provides a protective barrier against the acidic conditions and allows the protozoan to survive and potentially infect the host.
c. Dry soil lacking water or nutrients: Protozoans that can form cysts are well adapted to survive in dry soil lacking water or nutrients. The cyst acts as a protective barrier, allowing the protozoan to withstand desiccation and lack of nutrients until favorable conditions return.
d. A nutrient-rich pond: Protozoans that can form cysts may also be well adapted to survive in a nutrient-rich pond. When conditions in the pond become unfavorable, such as during periods of low nutrients or extreme environmental changes, the protozoan can form a cyst to protect itself and survive until conditions improve.
In summary, protozoans that can form cysts are well adapted for survival in various environments, including human blood, acidic stomach pH, dry soil lacking water or nutrients, and nutrient-rich ponds. The ability to form cysts enhances their survival chances by allowing them to protect themselves from adverse conditions and remain dormant until favorable conditions return.
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Determine if the expression -d^{5}+4d^{3}+c\sqrt{3}−d 5 +4d 3 +c 3 is a polynomial or not. If it is a polynomial, state the type and degree of the polynomial.
Answers
The given expression d^{5}+4d^{3}+c\sqrt{3}−d 5 +4d 3 +c 3 is a binomial polynomial, and the degrees are 3 and 5.
What do you mean by polynomial?Algebraic expressions known as polynomials contain variables with non-negative integer powers only. In this case, a polynomial is 5x2 - x + 1. As one of the powers of "x" is a fraction and the other is negative, the algebraic equation 3x3 + 4x + 5/x + 6x3/2 is not a polynomial. Expressions that contain at least one term with a non-zero coefficient are called polynomials.
Variables, exponents, and constants are all included in the words. In standard form, the leading term is the first term of the polynomial. The first term in a standard polynomial is the one with the highest degree, and the other terms are ordered in descending order of the exponents or powers of the variables, followed by constant values. The term "coefficient" refers to the outcome of multiplying a quantity by a variable. A "constant" is a number that is completely constant.
A polynomial containing two dissimilar terms is referred to as a binomial.
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Question 51 Marks: 1 Halon-1211 is used primarily in ______.Choose one answer. a. portable fire extinguishers b. fixed fire suppression systems c. printed circuit board cleaning d. vapor degreasing
Answers
Halon-1211 is used primarily in portable fire extinguishers. The correct option is a.
The Halon 1211 is used primarily in the portable fire extinguishers and this is the streaming agent. The Halon 1211 is majorly used in the streaming agent in the portable, and the hand be held the fire extinguishers.
This Halon 1211 is also used in the large wheeled extinguishers and it is called as the "Flight Line" units to be combat the airplane fires at the runway. The Halon 1211 fire extinguisher is the liquefied gas, and it pressurized with the nitrogen, that will discharges as the vapor causing the no cold. The option a is correct.
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Which of the following statements about biomolecules is true?
I. Biomolecules are the basis of life.
II. Biomolecules are involved in the metabolic processes of all living organisms.
III. Biomolecules are inorganic molecules.
Answers
2. TRUE because they involve in all the metabolic process
3.FALSE because they are organic molecules
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true or false All arthropods belong to the Class Insecta
true or false All rodents belong to the phylum Chordata.
true or false All amphibians belong to the class reptilia.
true or false All primates are mammals.
true or false A lion belongs to the genus Felis.
true or false All mammals are primates.
true or false All Insects and lobsters are arthropods.
Answers
Answer:
1.)true
2.)true
3.)true
4.)true
5.)true
6.)false
7.)false
Explanation:
Answer:
False: All arthropods belong to the Class Insecta
True: All rodents belong to the phylum Chordata.
False: All amphibians belong to the class reptilia.
True: All primates are mammals.
False: A lion belongs to the genus Felis.
False: All mammals are primates.
True: All Insects and lobsters are arthropods.
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The 'Cell theory' states that all living things are made of cells.
Which of the statements below also form part of the 'cell theory'?
A. Cells come from pre-existing cells.
B. Cells are surrounded by a cell wall.
C. Cells have a nucleus.
.D. Cells contain proteins.
Answers
The cell theory also states that cells come from pre-existing cells, the answer is option A.
What is the cell theory?The cell theory of life according to Theodor Schwann, states three components which include:
All living things are composed of one or more than one cellsThe basic unit of an organism's structure and organization is the cellCells emerge from pre-existing cellsCells are the units and building block of every living organism on their own and contain genetic information encodings. They have energy flowing through them and are usually composed of the same chemicals.
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Gas cloud 1 is most likely to form a star, gas 2 has not
Answers
Gas Cloud 1 aligns with the conditions favoring star formation, while Gas Cloud 2 deviates from these conditions, making it less likely to form a star.
Based on the given information, the conditions can be matched with the gas clouds as follows:
Gas Cloud 1:
Its temperature stays well below 14 million Kelvin.Its volume shrinks, and density increases due to gravity.Its hydrogen atoms retain their electrons.Gas Cloud 2:
It is spread out, with a greater volume.Its hydrogen atoms shed their electrons.It has a lesser concentration of elements.Gas Cloud 1 is likely to form a star because its temperature remains below 14 million Kelvin, indicating conditions suitable for stellar birth. The shrinking volume and increasing density due to gravity suggest gravitational collapse, a crucial step in star formation. The fact that its hydrogen atoms retain their electrons is important as it enables the fusion process required for star formation.
Gas Cloud 2, on the other hand, is not likely to form a star. It is spread out, indicating a lack of gravitational collapse. The statement that its hydrogen atoms shed their electrons implies ionization, which can hinder the fusion process necessary for star formation. Additionally, Gas Cloud 2 has a lesser concentration of elements, which may affect its ability to undergo the processes involved in stellar birth.
Overall, Gas Cloud 1 aligns with the conditions favoring star formation, while Gas Cloud 2 deviates from these conditions, making it less likely to form a star.
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genomics can be used to study the genetic relationships among species. why might genomics be important for evolution research? explain.
Answers
The study of genomics can prove the theory of evolution. So, genomics is important for evolution research.
What is genomics?
The set of DNA of an organism is called its genome. There are 3 billion base pairs of DNA and virtually, every single cell in the body will have a complete copy of the letters, or codes that compose the human genome.
DNA has all the required information to build the entire human body. A unit of DNA carrying the instructions for the formation of a specific protein or a set of proteins is referred to as a gene. Every one of the 20,000 to 25,000 estimated genes in the human genome codes for an average of three proteins. Genomics is the study of genomes.
Therefore, the study of genomics can prove the theory of evolution. So, genomics is important for evolution research.
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How does the Krebs cycle rely on glycolysis in order to run?
Answers
Answer:
Krebs cycle involves a series of reactions which oxidize the pyruvic acid molecules formed from glycolysis to produce carbon dioxide, energy(atp) as well as water
What is required to carry out fermentation or anaerobic respiration
Answers
Answer:
oxygen is required
Answer:
As oxygen is not required, fermentative organisms are anaerobic. Many organisms can use fermentation under anaerobic conditions and aerobic respiration when oxygen is present
Explanation:
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A)
Acetyl coA is made from pyruvate in the [ Select ] ["mitochondrial matrix", "cytoplasm", "", ""] by [ Select ] ["pyruvate dehydrogenase", "succinate dehydrogenase"] complex. In this process, the acetyl group is moved between enzymes within the complex by the [ Select ] ["lipoamide", "TPP"] . The [ Select ] ["dihydrolipoyl transacetylase", "pyruvate dehydrogenase component"] is the enzyme in which acetyl coA is actually formed. The [ Select ] ["FADH2", "lipoamide"] in the dihydrolipoyl dehydrogenase donates two electrons to NADH, which then goes on to the electron transport chain.
B)
In the citric acid cycle, [ Select ] ["acetyl coA", "pyruvate"] joins with [ Select ] ["oxaloacetate", "glucose"] to make citrate. Citrate possesses [ Select ] ["six", "three"] carbons. During the cycle, [ Select ] ["two", "three"] carbons are lost as CO2. The importance of the cycle is not to generate ATP, but to generate [ Select ] ["reduced electron carriers", "oxidized electron carriers"] , which then go on to the electron transport chain.
Answers
The importance of the cycle is not to generate ATP, but to generate reduced electron carriers, which then go on to the electron transport chain.
A) Acetyl coA is made from pyruvate in the mitochondrial matrix by pyruvate dehydrogenase complex. In this process, the acetyl group is moved between enzymes within the complex by the lipoamide. The dihydrolipoyl transacetylase is the enzyme in which acetyl coA is actually formed. The lipoamide in the dihydrolipoyl dehydrogenase donates two electrons to NADH, which then goes on to the electron transport chain.
B) In the citric acid cycle, acetyl coA joins with oxaloacetate to make citrate. Citrate possesses six carbons. During the cycle, two carbons are lost as CO2.
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Do you think an allele frequency of 1 is beneficial or harmful to the species?
Answers
An allele frequency of 1 is beneficial or harmful to the species and is increased from generation to generation.
Detrimental mutations are lost because they reduce an individual's fitness. If a mutation improves fitness the frequency of that allele increases from generation to generation. Allele frequencies reflect genetic diversity. Changes in allele frequencies over time may indicate that genetic drift is occurring or that new mutations have been introduced into the population.
An association with a beneficial allele may also carry a deleterious allele. The inability of natural selection to eliminate geriatric diseases is a reminder that successful fitness does not equate to the absence of disease. Dominant alleles always have a direct effect on phenotype, so they tend to be highly selected. However, even deleterious dominant alleles can persist in the population's gene pool.
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the following are all true of all of the african apes except for? group of answer choices they all live in bonded social groups of various size and makeup basic anatomy is similar among all three species they are all hominoids they are all highly sexually dimorphic they utilize a variety of food sources
Answers
All of the given statements are true for all African apes except for one. That one statement is that they are all highly sexually dimorphic.
While it is true that African apes are generally larger and stronger than their female counterparts, the degree of sexual dimorphism varies among the three species. For example, male gorillas are much larger and stronger than female gorillas, while the difference between male and female chimpanzees and bonobos is less pronounced. Nonetheless, all African apes live in bonded social groups of various sizes and makeups, have similar basic anatomy, are hominoids, and utilize a variety of food sources.
While some African apes, like gorillas, exhibit significant sexual dimorphism (with males being much larger and more robust than females), others like bonobos and some populations of chimpanzees show less pronounced sexual dimorphism. The other statements are true for all African ape species.
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What form of natural selection does the histogram show?disruptive selectionsexual selectiondirectional selectionstabilizing selection
Answers
The graph shows a type of natural selection that the curve that represents tha number of individuals in the population shifts in both directions and away from the center, that graph is an example of disruptive selection where the extremes traits are selected (population after selection - yellow) over the center (original population - blue).
in humans widow's peak (w) is dominant to straight hairline (w). two heterozygous dominant parents have children. complete the punnett square for this cross.
Answers
The Punnett square for a cross between two heterozygous dominant parents (Ww) in humans, where widow's peak (W) is dominant to a straight hairline (w), would have the following genotypic and phenotypic ratios: the genotypic ratio is 1:2:1 (WW:Ww:ww) and the phenotypic ratio is 3:1 (W_:ww).
Genotypic ratio: 1 WW : 2 Ww : 1 ww
Phenotypic ratio: 3 with widow's peak (W_) : 1 with straight hairline (ww)
The Punnett square for a cross between two heterozygous dominant parents (Ww x Ww) would be:
| W | w
-----|-----|-----
W | WW | Ww
-----|-----|-----
w | Ww | ww
The genotypic ratio is the ratio of the different genotypes that can be produced from this cross. In this case, there are four possible genotypes: WW, Ww, Ww, and ww. The Punnett square shows that there is one possible WW genotype, two possible Ww genotypes, and one possible ww genotype. So, the genotypic ratio is 1:2:1 (WW:Ww:ww).
The phenotypic ratio is the ratio of the different physical traits that can be observed in the offspring. In this case, there are two possible physical traits: widow's peak (W_) or straight hairline (ww). The Punnett square shows that there are three possible offspring with widow's peak and one possible offspring with straight hairline. So, the phenotypic ratio is 3:1 (W_:ww).
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explain the three main steps in the process of DNA replication
Answers
Answer:
Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment.
Each level in a food chain contains less energy than the one below it because some energy is *
Answers
Answer:
Explanation:
lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level
What would you predict to be the effect on an animal species of having longer loops of henle in their kidney structure?.
Answers
They would fare better in drier environments than creatures with shorter loops would.
What is the loop of Henle?Mammals, birds, and reptiles all have Henle's loops, which are extended, U-shaped portions of the nephron tubule in the kidney. The primary goal of Henle's loop is the recovery of water and sodium chloride from urine.
The concentration of urine using the "countercurrent multiplication" concept is the main purpose of the loops of Henle and the thick ascending limb of the distal tubule. With rising concentrations of these solutes closer to the papillae, the medulla has a gradient of urea and salt.
The kidneys' nephron includes the loop of Henle. The medulla region of the nephron contains the Henle loop. Due to their limited length, most nephrons have a loop of Henle that only reaches a small portion of the medulla; these nephrons are known as cortical nephrons.
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Drawing of phototropism in stems and address the following questions a. b. c. Which portion of the stem bends the most? Does/would removal of the tip of the plant alter the phototrophic response? How do your observations of the cut and intact seedlings confirm the involvement of hormone in phototropism?
Answers
Phototropism involves stem bending towards light; most bending occurs at elongation zone. Removing tip affects response; hormones play key role. Phototropism is the growth response of plant stems towards light.
The elongation zone, located below the stem's apical meristem, bends the most. Removal of the tip (apical meristem) can alter the phototropic response, as the tip produces auxin, a hormone responsible for this response.
Comparing intact and cut seedlings' reactions to light demonstrates the involvement of hormones in phototropism. Intact seedlings bend towards light due to auxin distribution, while cut seedlings, lacking the auxin-producing tip, show reduced or no phototropic response, confirming hormones play a crucial role.
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During an investigation, a scientist observes that african wild dogs communicate with each other by sneezing.
which choice explains how the scientist most likely made this observation?
a.the scientist traveled to africa and used an app on her mobile phone to measure the volume of the noises the wild dogs made while interacting.
b.the scientist traveled to africa and used her sense of sight and her sense of hearing to observe the wild dogs interacting in their natural habitat.
c.the scientist watched hours of online videos in hopes of learning more about african wild dogs.
d.the scientist used books to look up the answers to her questions about african wild dogs and their interactions.
Answers
The most likely choice for how the scientist made the observation that African wild dogs communicate with each other by sneezing is b. The scientist traveled to Africa and used her sense of sight and hearing to observe the wild dogs interacting in their natural habitat. The correct option is B.
This would allow her to directly observe the behavior of the wild dogs and how they communicate with each other. Using an app on a mobile phone to measure volume or watching online videos may not provide accurate or comprehensive information about the sneezing behavior of the wild dogs.
Looking up information in books may provide some background knowledge, but it would not allow for direct observation of the behavior in the animals' natural environment. Overall, direct observation in the wild is the most effective way to make accurate observations about animal behavior.
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1. In the fast change, how are other parts of the ecosystern affected?
Answers
Answer:
is there more to this question because this doesn't make sense.
Explanation:
(Brainlest) What might occur if a cell entered mitosis without completing the s stage of interphase?
Answers
Answer:
i think it is B .
Answer:The answer is D, because there would not be enough DNA, and that could lead to self-destruction, B is wrong