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Which of the following substances would have the most trouble crossing a biological membrane by diffusing through the lipid bilayer?
a. CO2
b. H2O
c. a small, nonpolar molecule such as butane (C4H10)
d. Na+
e. O2

Respuesta :

Answer;

d. Na+

Explanation;

  • The cell membrane's main trait is its selective permeability, which means that it allows some substances to cross it easily, but not others.
  • 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.
  • 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.

adefioyelaoye

Na+ is the substance which would have the most trouble crossing a biological membrane through diffusion.

What is Diffusion?

This is the movement of a substance from a region of higher concentration to that of a lower concentration.

Polar and charged substances typically have most difficulty passing through a lipid bilayer due to repulsive actions thereby making option D the most appropriate choice.

Read more about Diffusion here https://brainly.com/question/852767

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