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xxTIMURxx [149]
3 years ago
14

3 Question

Biology
1 answer:
Andrews [41]3 years ago
7 0
The answer is oxygen sediments and rock
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Describe how an ECG can help an informed individual determine the health of the heart.2) If an individual is experiencing a hear
Xelga [282]

Answer:ECG measures the electrical activity of the heart and how the I pluses travel through the heart... There by showing when the heart is beating normally or abnormally.. It can show an informed mind all this.

2.There are many causes of these but hyperkalemia ie high amounts of potassium in the blood can be a cause

Explanation:

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3 years ago
Cholesterol's main role in the membrane seems to be:
olga nikolaevna [1]

Answer:

E) Improve membrane fluidity

Explanation:

Cholesterol constitutes the basic structural element of the skeleton of cell membranes. Without their reinforcement, the membranes would become extremely fluid and lose their consistency. Cholesterol is found in the esterified membranes in its hydroxyl group (OH): with fatty acids, mainly oleic and linoleic, or as cholesterol sulfate. The cholesterol-sulfate polar group is disposed on one of the faces of the membrane that interacts with other polar groups in that area, while its bulky hydrophobic portion is embedded between the apolar parts of the lipids that form the membrane skeleton and They fulfill many other functions, among which the reduction in the permeability of protons and sodium ions, and their participation in signal transmission. Cholesterol is also essential in phagocytosis processes carried out by cells to capture many nutrients and, in general, for the function of cleaning up organic waste produced by macrophages.

The membranes must have a fluid structure so that the integrated proteins can move "horizontally" to interact with their ligands and with other proteins. The fluidity is given by unsaturated fat. With the excess of saturated fat, the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid and very sensitive to temperature changes. Cholesterol stabilizes the structure of the membranes; In order for them to have the correct structure, they must have the correct proportions of saturated, unsaturated fats and cholesterol. The membranes produced in the laboratory without cholesterol are unstable to temperature changes, drastically modifying their fluidity against the small temperature changes that occur in the physiological range.

In addition to its functions in cell membranes, cholesterol is an important product that metabolism uses as a raw material to make other compounds:

*Bile salts

*Sex hormones

*Hormones of the adrenal cortex (corticosteroids)

*Vitamin D (Calciferol)

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3 years ago
Why are baboons, sparrows, and human beings considered both primary and higher order consumers?
SIZIF [17.4K]
Baboons, sparrows, and human beings are considered both primary and higher order consumers because they all eat plants and meat. 
Primary consumers feed on producers/ plants. Then secondary consumers feed on primary consumers.
 
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How does the heat content of a substance affect the way it flows
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I think this helps idk.

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What the answer to this question
IrinaVladis [17]
You didnt even gave a question.Sorry but i cant answer.
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