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uranmaximum [27]
3 years ago
6

Crossing over occurs when

Biology
2 answers:
Zanzabum3 years ago
5 0

The correct answer to this question is B:  homologous chromosomes join together to form tetrads during prophase I.

balandron [24]3 years ago
3 0
During meiosis 1, prophase 1 Each chromosome  form tetrads and  and become more and more condensed. This is when crossing over occurs. So your answer is B. 
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Why is it important that saline solution has a specific concentration when a person is put on an IV drip of saline?
timurjin [86]

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Doctors utilize IV saline for refilling lost fluids, flushing wounds, providing medication, and maintaining patients through surgery, dialysis, and chemical treatment. As a fashionable therapy, Saline IVs even found a space outside the hospital.

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The solution of sodium chloride-water, generally known as saline, is the saline solution. It is the intravenous fluid most usually used. It was utilized since the early decades of the 19th century and is used annually in the United States alone with more than 200 million liters.

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Direct water injection into the bloodstream would likewise lead to the blood cells' osmotic impact.

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Water is blended in a solution in sodium and chlorine at approximately the same concentration as blood plasma to avoid damages caused by pure distilled water on blood cells. The outcome is that the solution splits the circulating volume with the cellular fluid and becomes an integral part of the circulating volume without a detrimental influence on blood cells.

6 0
3 years ago
Which is true regarding the structure and synthesis of hormones?
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4 0
4 years ago
Compared to bacteria cells,viruses are
sladkih [1.3K]

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Viruses have to invade the body of a host organism in order to replicate their particles. Therefore, most viruses are pathogenic. The main difference between bacteria and virus is that bacteria are living cells, reproducing independently and viruses are nonliving particles, requiring a host cell for their replication.

hope this helps :)

4 0
3 years ago
"Methods A and B are classified as methods of passive transport because they do not require
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Option 1. ATP (adenosine triphosphate)
passive transport doesn't require ATP whereas active transport does.
8 0
3 years ago
Read 2 more answers
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