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Nadusha1986 [10]
3 years ago
10

what is the main función of a cell membrane?

Biology
1 answer:
eimsori [14]3 years ago
3 0

Answer:

its a barrier that goes around everything else

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ovary

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many colleagues

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which of the following events is most likely to result in conditions suitable for primary succession?
Oksana_A [137]

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An earthquake , a forest fire , a hurricane  and a volcanic eruption.

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An earthquake , a forest fire , a hurricane  and a volcanic eruption are the events that is responsible for the suitable conditions for primary succession because all the population of animals and vegetation are removed from an area and the new type of organisms is start to living in that new environment. These new organism has the ability to survive that environmental conditions. These events completely removed the population in the environment and provides conditions for primary succession.

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2 years ago
How do facilitated diffusion and active transport differ? Is osmosis an example of facilitated diffusion or active transport?
castortr0y [4]
Note that Facilitated diffusion , Active transport and Osmosis are three different ways of transporting substances across the cell surface membrane.

Facilitated diffusion is the movement of a substance from high to low concentration , similar to simple diffusion , but due to the complexity of the cell surface membrane , polar molecules and ions cannot just pass like that , so they pass through specific carrier and channel proteins in the cell surface membrane and so we call it facilitated diffusion.

For Active transport , it's the movement from low to high concentraion using energy from ATP

For Osmosis , it's totally different . You only name osmosis when its all about water . Its the net movement of water from high water potential to low water potential through partially permeable membrane .
If you're doing AS , you'll be familiar with Endosmosis and Exosmosis.
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Bacteria reproduce by simple cell division. What is the official name for this class of cell division?
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Bacteria can simply divide by binary fission, an asexual reprodution where single bacterial body separates into two bodies. During this process bacteria duplicates its DNA content so that when the body separates by cytokinesis, each has its own DNA material.

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