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kicyunya [14]
3 years ago
10

Which statement is true about the cell theory?

Biology
2 answers:
Vikki [24]3 years ago
5 0
It is well supported by evidence otherwise it wouldn’t be called a theory
DochEvi [55]3 years ago
3 0

Answer:

It is well supported by evidence.

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Trung thể.

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Darwin’s theory of evolution offers a scientific explanation for which of the following ?
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Introns must be removed prior to translation of the mRNA. In addition, eukaryotic transcripts (mRNA) have to undergo two more st
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Eukaryotic transcripts (mRNA) have to undergo capping and splicing before it can be translated.

<h3>RNA processing:</h3>

1. An RNA transcript is first produced in a eukaryotic cell as a pre-mRNA, which needs to be converted into a messenger RNA (mRNA).

2. The RNA transcript is given a 5' cap at the start and a 3' poly-A tail at the end.

3. The process of splicing involves cutting out some RNA transcript segments (introns), then joining the remaining segments (exons) back together.

4. Some genes have the ability to alternate splices, which produces various mature mRNA molecules from the same beginning transcript.

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2 years ago
What is the process by which substances move from areas of higher concentration to areas of lower concentration
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Diffusion

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The process by which substances move from areas of higher concentration to areas of lower concentration is called diffusion.

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When perfume bottle is open particles spread in air due to difference in concentration from bottle to out side environment.

While,

In case of active transport substance move against the concentration gradient i.e to wards the area of higher concentration.

This process require energy.

4 0
3 years ago
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