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kirza4 [7]
3 years ago
5

Which of the following substances would have the most trouble crossing a biological membrane by diffusing through the lipid bila

yer?
a. CO2
b. H2O
c. a small, nonpolar molecule such as butane (C4H10)
d. Na+
e. O2
Biology
1 answer:
tangare [24]3 years ago
5 0
<h3><u>Answer</u>;</h3>

d. Na+

<h3><u>Explanation</u>;</h3>
  • The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others.
  • <em><u>Small molecules that are non-polar (have no charge) can cross the membrane easily through diffusion, but ions (charged molecules) and larger molecules typically cannot.</u></em>
  • Charged ions  such as N+ and K+ Cannot permeate the cell membrane for the since uncharged molecules repel uncharged molecules present in the membrane structure.

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