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Katena32 [7]
3 years ago
5

What makes up a cell membrane

Biology
1 answer:
AysviL [449]3 years ago
7 0
Cell membranes are mostly made up of lipids (fats)
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An ionic bond occurs when _____.
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It would be 2) two atoms exchange electrons and become ions
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Describe and draw the structure of an ATP module.
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so ATP is adenine triphosphate

it has 3 phosphate groups, hence the 'tri'

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and it also had a carbon ring containing OH groups


i can't draw it on here but if you google the structure hopefully my explanation will make more sense

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Which feature on microscope did Anton van Leeuwenhoek add that enabled him to magnify organisms about 250 times?
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Do the properties of adhesion, cohesion, and surface tension behave different in salt water vs fresh water
Elanso [62]

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The water has a dipole that causes it to act like a magnet, attracting other water molecules to it. Adhesion is the attractive forces that cause water to "stick" to a surface other than its own. ... The salt water has a much lower cohesion than plain water so it's attractive forces are less than plain water.

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2 years ago
The semilunar valves of the heart open at the onset of the ejection period. Approximately what percentage of the stroke volume i
mr Goodwill [35]

The percentage of the stroke volume is ejected during the first quarter of systole will be approximately 60% to 65%

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Instead they will pump only a proportion of blood in each of the cardiac cycle.  The ejection fraction refers to the proportion of the intraventricular volume that is received as a output in circulation process. A human with normal heart functioning can have approximately 60-65%. This is known to be stroke volume. The blood volume that is ejected is strove volume.

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