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Rashid [163]
3 years ago
12

What is meant by the following statement? The cell membrane is semipermeable. A. The membrane allows all polar molecules into th

e cell. B. The membrane is very specific about what it allows to pass through. C. The membrane does not contain any membrane proteins. D. The membrane will not allow any molecules to pass through.
Biology
1 answer:
Gennadij [26K]3 years ago
7 0

I believe the correct answer would be B.  Semipermeable means that it allows certain substances to pass through, and certain other ones to not pass through.  So given all of your options, I would say that B makes the most sense.  Hope this helped!

-TTL

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The oxygen dissociation curve represents the percentage saturation of Hb with oxygen at different partial pressure of oxygen. The different partial pressures gives sigmoid shapes to the curve. When this curves shifts to right, it  indicates  low affinity or binding of oxygen by the Hb. it also indicates the unloading or releases of Oxygen by Hb molecules at condition of low pressure. e,g in the muscles during strenuous exercise.However, when the curve shifts to the left, this indicate high affinity for oxygen, great binding, at high partial pressure of oxygen.e,g in the lungs to take oxygen and releases CO2.

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