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AVprozaik [17]
2 years ago
13

What is meant by the following statement.the cell membrane is semipermeable?

Biology
2 answers:
attashe74 [19]2 years ago
6 0

Answer: Cell membrane ( also called plasma membrane, made up of two layers of phospholipids) is a membrane surrounding the cytoplasm of all cells and separates the internal environment of cell from its external environment.

It is a semipermeable membrane, which means that it allows the entry and exit of only specific molecules ( such as small uncharged molecules, small polar molecules like Oxygen and Carbon-dioxide, small uncharged polar molecules like water). Also, it does not allow the toxic substances to enter the cell and at the same time the useful substances to leave the cell.

By doing so, it acts like a protective barrier for the cell.


aev [14]2 years ago
3 0
Semipermeable means the cell membrane can pick and choose what goes out of it and into it. At least, that's what I believe it is.
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<h2><em><u>Answer:</u></em></h2>

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svlad2 [7]

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No

Explanation:

Both A alleles and B alleles are dominant over the O alleles. This means that both parents must have an O allele present to even have a chance of having a child with type O blood. Lets say the mother has type O blood with the father having type AB blood. The possible combination would be: AO, BO, AO, BO. The punnett square should look like this:

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O     AO        BO

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6 0
3 years ago
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kykrilka [37]

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3 years ago
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