What is the function of the enzyme RNA polymerase during transcription?
helps slow down the process of transcription
helps speed up the process of transcription
aids in destroying the mRNA sequence that was read
aids in packaging amino acids for use at a later time

Answer:

The correct answer is A

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The cell cycle responds to the daily loss of skin cells skin promoting reproduction. Details about reproduction can be found below.

Reproduction in biology refers to the process of making copies or duplicate of a cell.

According to this question, skin cells are lost on a daily basis even without injury.

However, the cell cycle through the process of mitosis responds to this loss by making more copies of skin cell in a process of reproduction.

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Answer:

2. Parathyroid hormone level decreases

4. Ca and phosphate reabsorption decreases

Explanation:

When plasma Ca concentration decreases, the action of Parathyroid hormone level decreases  which leads to Calcium and phosphate reabsorption decreases. Parathyroid hormone is responsible for the increase of calcium and phosphorus in the blood when there is low level in the blood so when the re is huge amount of calcium and phosphorus in the blood, the Parathyroid hormone activity decreases which decrease the reabsorption of calcium and phosphorus decreases.

Answer:

Crossing over occurs during prophase I of meiosis before tetrads are aligned along with the metaphase I.

Answer:

Advantages:

Produces no polluting gases.

Does not contribute to global warming.

Very low fuel costs.

Low fuel quantity reduces mining and transportation effects on environment.

High technology research required benefits other industries.

Disadvantages:

Waste is radioactive and safe disposal is very difficult and expensive.

Local thermal pollution from wastewater affects marine life.

Public perception of nuclear power is negative.

Costs of building and safely decommissioning are very high.

Cannot react quickly to changes in electricity demand.

Answer:

Bar and lexical.

Explanation:

Bar and lexical are the name of two different types of scales that are found on maps. Bar scales are used more frequently in the maps because they represent or show the distance ratio visually instead of in words, while on the other hand, lexical scales may be expressed in words, as a ratio, or as a fraction. Examples are 1:10,000 or 1/10,000. Using map scales is very important in the real world if you want to find out the distance you are traveling.

Answer:

Following are the steps to the given points:

Explanation:

Answer:

A

Explanation:

The atomic massof an element is defined as (the SUM) of masses of protons and neutrons in an atom

Answer:

female reproductive call are called ova

Answer:

Sponge parazoans are unique invertebrate animals characterized by porous bodies. This interesting feature allows a sponge to filter food and nutrients from water as it passes through its pores.

Answer:

Carotenoids have two important functions in plants. First, they can contribute to photosynthesis. They do this by transferring some of the light energy they absorb to chlorophylls, which then use this energy to drive photosynthesis. Second, they can protect plants which are over-exposed to sunlight. but the letter answer I don't know

The benefit of a plant having Chlorophyll and Carotenoids is that plant can absorb energy from multiple wavelengths at once. Option A is the right answer.

Chlorophyll is the green pigment that is responsible for the green color in the leaves of plants. Carotenoid on the other hand is a yellow, orange, and red color pigment that is produced in plants, algae, and some other forms of bacteria.

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Answer:

The pumping of the heart involves the alternate contraction and relaxation of the chambers of the heart. The upper chambers of the heart are called at atria and the lower chambers of the heart are called ventricles.

Answer:

kidneys, hypothalamus, and endocrine glands.

Explanation:

I don't think theres anything to explain rlly hope this is correct tho

Answer:

option c is the answer to this question

genetic drift is the answer

Answer:

The correct answer is A!

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After several miles of running and sprinting in intervals, the runner’s muscles ache and feel fatigued. The runner's muscles have accumulated lactic acid, this is best explanation.

Lactic acid is the  component for the proper working of the body as It increases in concentration during exercise but does not cause muscle soreness.

Lactic acid is integral acid for different bodily function and is not solely a byproduct of exercise, has three main uses in the body:

It mainly involve in energy production mitochondria, act as a precursor for producing glucose and  a signaling molecule

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Answer:

Explanation:

Genetic drift, gene flow, mutations, and natural selection are responsible for the change in the gene pool over time. Example of genetic drift: a population of rabbits with alleles B and b, both alleles are present in equal frequencies p = 0.5 and q = 0.5 if 10 parents reproduce the probability of having an offspring with alleles B or b is 0.5; however, by chance, a slight difference in the offspring allele frequency might occur due to random sampling. As a result, in the next generation, the allele frequencies will change slightly to new frequencies by chance to become p = 0.4 and q = 0.6. in the following generations, the random sampling of alleles continues and the change in allele frequency will be greatly different from the initial 0.5 frequency due to genetic drift. Even though genetic drifting is one of the factors that participate in the evolutionary process of the genetic pool by increasing or decreasing a certain allele’s frequency, however, it does not influence the adaptation of individuals to the environment since the affected genes may be harmful or beneficial genes.

Resources:

Masel, J. (2011). Genetic drift. Current Biology, 21(20), R837-R838.‏

Kliman, R. M. (2016). Encyclopedia of evolutionary biology. Academic Press.‏

Maloy, S., & Hughes, K. (Eds.). (2013). Brenner’s Encyclopedia of Genetics. Academic Press.‏

Clark, M, A., Douglas, M., & Choi, J. (2018). Biology 2e. Openstax

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Answer:

Explanation:

Following the rule of "like dissolves like", the hydrophilic head of the phospholipid molecule dissolves readily in water. The long fatty acid chains of a phospholipid are nonpolar, and thus avoid water because of their insolubility

Answer:

the correct answer is will be option b

Explanation:

I hope this help you have a great day

Answer:

Phospholipid bilayer

Explanation:

That is essentially the primary componenent of the cell membrane where phospholipids form two layers.

Answer:

Explanation:

From what I can see I think......

16) True

17) False

Answer:

The correct answer is - All of the above

Explanation:

Food is produced at every part of the earth as it may be found even in the parts that are darkest at night or at the part of ocean. Communication between mates can be done by signals that may sent to show interest in mating, Camouflage is the way to escape or hide by use of the light that may momentarily distract predators as it can camouflage the underbelly of the fish by lighting it up the same color of as the sea surface to make it invisible.

Answer:

The father most likely has HH and cc as its genotypes.

Explanation:

Answer:

Feathers initially evolved in a role associated with sexual selection.

Explanation:

In species where only males had feathers, these feathers can be considered to have evolved into a role associated with sexual selection. This is because in these species, males used their feathers as a sexual attraction for females, in this case, females chose the males that had more attractive feathers to mate and generate new individuals for the species. An example of this can be seen in the peacock, where the tail with lush feathers is only present in males and is intended to sexually attract females.

Answer:The respiratory system is the network of organs and tissues that help you breathe. It includes your airways, lungs and blood vessels. The muscles that power your lungs are also part of the respiratory system.

Explanation:

Mitochondria is called the powerhouse of the cell.

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Mitochondria are known as the “powerhouse of the cell.”

Answer:

I think no b is the ans ok

Answer:

is a thick band of neural fibers enabling communication between the two brain hemispheres.

Explanation:

A brain can be defined as an organ of soft nerve tissue that is found in the skull of vertebrates and it's typically responsible for the coordination of nervous activities, intellect and sensation.

The human brain consists of various sections and these includes;

I. Anterior Cingulate Cortex (ACC) which resembles a bow or collar surrounding the frontal part of the corpus callosum. This is the frontal part of the cingulate cortex which helps to make complex cognitive functions such as impulse control, decision-making, emotions and empathy.

II. Ventral prefrontal cortex in humans are interconnected with the brain and are responsible for the processing of risk, empathy, fear and social decision-making

III. The Cerebral Cortex: this part of the brain primarily comprises of grey matter, foldable sheets of neurons and forms its outermost layer. Therefore, cerebral cortex is known as the outermost layer of the brain (cerebrum) and thus, makes up half of its weight. It is about 2.5 millimeters in thickness and as such it's able to fold.

The corpus callosum is a large, thick band of C-shaped neural fibers found beneath the cerebral cortex and it's saddled with the responsibility of enabling communication between the two brain hemispheres i.e the right hemisphere and the left hemisphere.

Answer:

YES NO YES

Explanation:

Answer:

LCM= Least common multiple

Explanation:

The least common multiple, lowest common multiple, or smallest common multiple of two numbers a and b, generally represented by lcm, is the smallest positive integer divisible by both a and b in arithmetic and number theory.

For example, the LCM of 24 and 36 is 72, and The LCM of 63 and 108 is 756.

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Answer: repel forces and attract forces