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olchik [2.2K]
3 years ago
7

A _____________ is a professional who draws blood for tests, transfusions, donations and research.

Biology
1 answer:
PtichkaEL [24]3 years ago
5 0
<span>The professional in charge of extracting samples of blood for tests is called phlebotomist, they are also the biochemists that extract the blood sometimes but exclusively corresponds to the phlebotomist. Doctors and nurses are also trained to draw blood, but this work belongs to the phlebotomist who is the professional in charge of this.</span>
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Blue whales have 44 chromosomes in every cell. determine how many chromosomes you would expect to find in the following:Sperm ce
baherus [9]

Sperm cell: We expect to find 22 chromosomes.

The spermatozoon is a small cell (5 micrometers in diameter), much smaller than the ovum, but with a movable tail (a flagellum) 60 micrometers long. To be lightweight and mobile, to quickly reach the egg, the sperm gains space by minimizing its cytoplasm and compacting its DNA. Head is covered with the acrosome, a pocket full of enzymes that will be used to pierce the membrane of the egg.

It is a haploid cell because it contains half of the genetic material of the individual, lost at the time of meiosis during the process of spermatogenesis that the primordial germ cells undergo in the seminiferous tubules of the testes.


Egg Cell: We expect to find 22 chromosomes.

The egg is the sexual cell (or gamete) produced by the females of the animals.

Like all gametes, the egg is haploid, it contains half of the chromosomes of the future embryo, so the number of chromosomes will be 22 instead of 44. Then this egg will meet a sperm cell to gather their chromosome and form an embryo of 44 chromosomes.


Daughter Cell from Mitosis: We expect to find 44 chromosomes.

Mitosis, which ensures the birth of cells identical to the mother cell during asexual multiplication (so the number of chromosomes will remain the same, it will not divide in two).

Mitosis is an asexual cell division. This means that it is just a division of a mother cell into two daughter cells, which will inherit exactly the same genetic inheritance.


Daughter Cell from Meiosis II: We expect to find 22 chromosomes.

Meiosis is a particular mode of division of the living cell by which an initial cell with 2n chromosomes (in this case 2n = 44 chromosomes), a diploid stage, gives rise to four daughter cells possessing only n chromosomes, a haploid stage (n = 22 chromosomes). Meiosis is one of the forms of cell reproduction, this process is performed on the gonads to produce gametes.

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3 years ago
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Which statement describes the motion of the sun?
olya-2409 [2.1K]
A is or c is the correct answer
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Does Darwin’s theory of Nature selection explain how evolution occurs ?
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Yes Darwin’s theory of natural selection
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Would an amphibian that lacks lungs and breathes entirely through its skin likely be larger or smaller than an amphibian that ha
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Answer: .D. Smaller because its smaller surface area to volume ratio would allow it to breathe sufficiently through its skin alone.

Explanation:

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As you move to a higher elevation (e.g. in the mountains), the air pressure drops significantly. In turn...
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Answer:

the temperature of water drops and the density of it goes down as well.

Explanation:

The higher the altitudes, the lower the temperature.

At high altitudes, molecules tend to be more spread out, so the density of the molecules decrease.

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