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hoa [83]
3 years ago
8

Which statement is correct?

Biology
1 answer:
ruslelena [56]3 years ago
8 0
B) The number of neutrons always equals the number of protons.
Hope this is of great help to you, and happy studying~!
~Mistermistyeyed.
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What structural component gives arteries the ability to passively adapt to changes in blood pressures that accompany the heartbe
Andrews [41]

Answer: elastic fibers

Explanation:

Elastic fibres are the essential durable component present in mammalian connective tissueand functions to provide proper pulmonary,  cardiovascular and intestinal system structure and function. Their structural function is to provide elastic recoil and resilience for the tissues.

Elastin fibers ahve two main including microfibrils and elastin containing fibrillin play a mechanical and structural role in the arteries, and their important function is to provide the tissues with resilience and elasticity.

Hence, elastic fibers helps arteries to adapt to changes in blood pressures that accompany the heartbeat.

5 0
3 years ago
According to the central dogma, which of the following represents the flow of genetic information in cells?
const2013 [10]

Answer:

DNA to RNA to protein.

Explanation:

Central dogma in biology was given by Crick in 1957. The central dogma explains the flow of genetic information in the cells.

According to the central dogma, DNA can multiply and increase its number by the process of replication. The information from DNA is changes to RNA by the process of transcription. The expression of protein product expression occur from the RNA by the process of translation. Hence, the information travels from DNA to RNA to protein.

Thus, the correct answer is option (2).

4 0
3 years ago
Suppose a population is carrying a condition controlled by two alleles: R (dominant) and r (recessive). Only homozygous individu
White raven [17]

<span><u>The answer is A. 72.25 percent.</u>

The Hardy-Weinberg principle can be used:</span>

<em>p² + 2pq + q² = 1</em> and <em>p + q = 1</em>

where <em>p</em> and <em>q</em> are the frequencies of the alleles, and <em>p²</em>, <em>q²</em> and <em>2pq </em>are the frequencies of the genotypes.

<span>The <em>r</em> allele (<em>q</em>) is found in 15% of the population:
q = 15% = 15/100
Thus, q = </span><span>0.15

To calculate the <em>R</em> allele frequency (<em>p</em>), the formula p + q = 1 is used:
If p + q = 1, then p = 1 - q
p = 1 - 0.15
Thus, </span><span>p = 0.85

Knowing the frequency of the <em>R</em> allele (<em>p</em>), it is easy to determine the frequency of the RR genotype (p²):
p² = 0.85² = 0.7225

Expressed in percentage, p² = 72.25%.</span>

4 0
2 years ago
Please Help!!!!!
Temka [501]
Most of the metabolic activity in the cell occurs in the Cytoplasm or answer A.
Hope this helps!
Mark me brainliest please! 
7 0
3 years ago
Read 2 more answers
A red flower and a flower with red and white spots are crossed. What is the percentage of them having an all red flower
Lynna [10]

Answer:

the answer is 2 percent

7 0
2 years ago
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