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Finger [1]
3 years ago
13

What is a cell membrane and describe its structure and components.

Biology
1 answer:
IceJOKER [234]3 years ago
5 0

Answer:

Cell membrane or plasma membrane is the semi-permeable outer layer surrounding the components of the cell.

It is important to the cell as it provides important properties to the cell as it separates the aqueous interior of the cell from the external environment, helps in cell–cell contact, in surface recognition, signaling and transport.

The plasma membrane is made up of different types of molecules like phospholipids, proteins, cholesterol, carbohydrates providing flexibility to the layer so, the model of membrane is known as fluid mosaic model.

The primary constituent of membrane is a lipid molecule called Phospholipids which is made up of glycerol molecules attached to a phosphate group and forms a hydrophilic head while long fatty acyl chains attached to the head froms hydrophobic tails.

It is the fatty acid chains which provide hydrophobic nature to the cell membrane. These layers are arranged in the form of bilayer with head towards outside while tails inside.

Along with phospholipid membrane posses peripheral and integral proteins which helps in transport of the molecules across membrane.

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Answer:

Cellular Reproduction

Explanation:

" positive feedback loops push the organism further out of homeostasis, but may be necessary for life to occur. Homeostasis is controlled by the nervous and endocrine systems in mammals." (Lumen Learning)

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3 years ago
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gayaneshka [121]

Answer:

Clear cuts are areas from which every tree has been cut down and removed, in a shelterwood system the old stand is removed in a series of cuttings to promote the establishment of an essentially even-aged new stand under the shelter of the old one, and uncut forests are just your average wild woods, left alone and was never bothered with.

for a simpler answer: clear cuts are clear areas, shelter wood are slight cuts, removing some trees for an environment such as parks and backyards, and uncut forests are wild forests that has no trees cut down.

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What was the dependent variable in hookes experiments
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<span>The extension of the spring Δx.</span>
4 0
3 years ago
Who can help me with this please
alisha [4.7K]
The system of lenses close to the slide is known as the objective and the one on top of the microscope is known as the eyepiece. Answer is eyepiece.
8 0
3 years ago
Explain how the structure of the cells that you have studied give evidence if a creator
laila [671]
Hi!

So, assuming that you mean a creator as in a religious deity - we're going to run into problems here.

In order for something to be scientifically validated, it has to be proven scientifically by following the scientific method.

As science is based off the physical world, the things we prove must reflect that. The idea of a deity is something which lies <em>outside </em>the physical realm.

This means that any proof that we do find a 'creator', will simply just be something we now know about the physical world.

We can't have <em>scientific </em>evidence of something which we cannot prove <em>scientifically. </em>

With that said, unless there is context or a piece of information missing, the question is unanswerable.

Hopefully, this helps! =)
7 0
4 years ago
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