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ipn [44]
3 years ago
9

2. An atom consists of 21 protons 22 neutrons and a number of electrons which

Biology
1 answer:
puteri [66]3 years ago
4 0

Answer:

the number of valence electrons cuerall

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Which of the following describes the relationship between population and species?
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A population consists of all individuals of all species in one area

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Which characteristic of viruses prevents them from being used as evidence to support cell theory?
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Viruses replicate only inside host cells.

Explanation:

<u>Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells. </u>

According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.

<em>Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory. </em>

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3 years ago
Cell walls are made of cellulose in ____________ cells.
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The scientific theory of _________ states that populations change over time in response to changes in the environment.
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I believe the answer is : A - Evolution

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The sodium-potassium ion exchange pump_____________.
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The sodium potassium ion exchange move sodium and potassium in opposite direction in electrochemical gradients.

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