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Lapatulllka [165]
3 years ago
14

Explain why large, multicellular organisms must have trillions of microscopic cells rather than thousands of larger cells.

Biology
1 answer:
zimovet [89]3 years ago
8 0
There are trillions of cells EVERYWHERE including blood cells, brain cells, and even skin cells !! I believe that multicellular organisms that are large need to have trillions of cells to be able to fill their whole body. For example , humans, Humans have one of the most complex cells, we humans are very big so thousands of cells would not be enough to contain our entire body. Even the word ' multicellular' meaning multiple cells gives people a hint that we are multicellular . In conclusion , trillions of cells are needed for multicellular organisms , without them we wouldn't be able to function properly.
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In humans, methylation of chromosomal DNA is a signal that often leads to
Ulleksa [173]

Answer:

The correct answer will be option-formation of heterochromatin

Explanation:

Methylation of DNA is the epigenetic mechanism which controls the expression of a gene by adding a methyl group to the cytosine bases in eukaryotic DNA.

The methylation of DNA converts the cytosine residues to the  5-methylcytosine catalysed by DNA methyltransferase enzyme. This results in the silencing of the gene and transcription get switched off.

Studies have shown that DNA methylation is involved in the formation and maintenance of the heterochromatin structure which is the condensed form of the chromatin in which transcription is switched off.

Thus, the formation of heterochromatin is the correct answer.

7 0
3 years ago
The zinc chloride produced by the reaction is in what state
ANEK [815]

Answer: Solution in Water

Explanation:

I believe this refers to the reaction between Zinc and Hydrochloric acid.

When this happens, the solution will be Zinc Chloride but as it happened in a solution (the acid), the resulting Zinc Chloride salt would be in aqueous form which means that it would be a solution in water which is the other product of this reaction.

Had the zinc reacted with gaseous HCI, it would have resulted in a Zinc Chloride with no liquid in it.

4 0
3 years ago
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IrinaVladis [17]

Answer:

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Explanation:

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5 0
3 years ago
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mr Goodwill [35]

Answer:

Commensalism

Explanation:

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8 0
3 years ago
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Tresset [83]
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Hope this helps
5 0
3 years ago
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