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Alona
2 months ago
13

Glucose, a small uncharged molecule, can pass through the cell membrane, but sodium ions do not pass through the membrane easily

. What is the most accurate explanation for these findings?1) Cell membranes have carrier proteins for glucose but not for sodium.2) The cell membrane is semi-permeable.3) The membrane potential makes it difficult for sodium ions to diffuse across the membrane.4) The sodium-potassium pump keeps sodium inside the cell.
Biology
2 answers:
s2008m [2.3K]2 months ago
3 0

Response: Option A

Justification:

The process of glucose traversal across the membrane is mediated by carrier proteins that facilitate the transport of glucose molecules.

The movement of ions from areas of lower concentration to those of higher concentration results in a reduction of entropy, which requires free energy input; thus, ions require channels for their movement instead of the pathways used by glucose.

Therefore, glucose can move across the membrane via carrier proteins while sodium ions cannot utilize this method.

s2008m [2.3K]2 months ago
3 0

The answer is number 1 #


I hope this assists

Could I please receive some help?

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