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Ronch [10]
3 years ago
7

Cholesterol is an important component of the cell membrane because *

Biology
1 answer:
finlep [7]3 years ago
6 0

Answer:

Option A... Because cholesterol prevents membrane from freezing and maintain membrane fluidity

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Which type of microscope would you use to study (a) the changes in shape of a living white blood cell and (b) the details of sur
barxatty [35]

1. Answer;

Light microscope (LM)

Explanation;

-A light microscope (LM) is an instrument that uses visible light and magnifying lenses to examine small objects not visible to the naked eye, or in finer detail than the naked eye allows.

-It allows attachment of the focus wheels and the stage to the microscope. A light source used in place of a mirror. Most microscopes do allow manual light adjustment via a wheel located near the base.

2. Answer;

Scanning electron microscope (SEM)

Explanation;

-A scanning electron microscope (SEM) scans a focused electron beam over a surface to create an image. The electrons in the beam interact with the sample, producing various signals that can be used to obtain information about the surface topography and composition.

-There are two main types of electron microscope; the transmission EM (TEM) and the scanning EM (SEM). The transmission electron microscope is used to view thin specimens (tissue sections, molecules, etc) through which electrons can pass generating a projection image.

8 0
4 years ago
What are the two major lipids in cell membranes?
natka813 [3]

Answer:c. Steroids/cholesterols and phospholipids

Explanation:

The cell membrane structure exhibit a fluid mosaic model due to the presence of two types of membrane lipids these are phospholipids and sterols like steroids/cholesterols.    

A phospholipid is a kind of lipid that is made up of glycerol, two fatty acids in tail and a head group associated with the head group. The biological membrane forms two layers of phospholipids with their tails that points inwards and the arrangement is called as the phospholipid bilayer.

The cholesterol is the another membrane lipid in the cell membrane. It is composed of fused carbon rings present along the side of phospholipids.

4 0
4 years ago
Who is clinically dead? helga, who exhibits no cortical functioning naomi, who is not breathing and whose heart is not beating j
Anna35 [415]

Answer: naomi, who is not breathing and whose heart is not beating

A person is considered clinically dead if their blood circulation and breathing is stopped because those two is needed to sustain live. Notice that the diagnosis need both of them, so only one of them is not enough. Helga and John has no problem in breathing and circulation, so they wont be considered clinically dead.

5 0
3 years ago
A single atom of carbon is joined to a hydrogen atom. What is the maximum double single bonds the carbon has yet to form A.1 b.2
Bumek [7]
The maximum carbon has to form is d.4
3 0
4 years ago
How do humans influence the availability of renewable and non-renewable resources
Kay [80]

Answer:

Humans use up many nonrenewable reacources every day, alongside renewable ones. One example of such is oil, oil takes millions of years to form, much longer than the amount of time it takes for us to use it up.

Explanation:

Hope this was helpful! :)

5 0
3 years ago
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