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kupik [55]
3 years ago
15

The cell membrane performs several important functions in addition to separating the cytoplasm from the outside environment. It

controls which molecules enter and leave the cell. The cell membrane is “selectively permeable,” which means it allows certain substances through and not others. One way that substances enter and leave the cell is through diffusion, the movement of particles from higher concentration to lower concentration. For example, if the concentration of salt molecules is higher inside the cell than outside, salt particles will move out of the cell. Diffusion is a type of passive transport, a movement of particles that does not require energy to occur. Facilitated diffusion is a kind of passive transport where proteins in the cell membrane help particles move from high to low concentration.
The cell membrane functions most like a?
Biology
1 answer:
lyudmila [28]3 years ago
5 0

Answer:The cell membrane controls the movement of substances in and out of cells and organelles. In this way, it is selectively permeable to ions and organic molecules.

Explanation:

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iris [78.8K]

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Just one round without DNA repair

Explanation:

When an error occurs before or during replication, in a normal system, there is always proofreading and correction. If the error is not corrected during replication, it can then be corrected by the DNA damage repair system. But if not also corrected, the error becomes fixed and subsequent replication will produce this error

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What is the function of restriction endonucleases in bacteria?
ki77a [65]

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The restriction endonucleases in bacteria (b) they provide a defense mechanism against infection by viruses

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Is important to remember that viruses go into different organisms just with a copy of DNA that wants to replicate inside of them creating more and more copies until it breaks the hosting cell and this is how the infection spreads. This protein restricts (that's the reason of its name) or stops the replication stage of the virus DNA by cutting it into many pieces stopping in this way the spread of the infection and the death of the bacteria.

7 0
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A somatic cell from a garden pea normally contains 14 chromosomes. how many sister chromatids would that cell contain during g1
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