Question

select the true statements. carbon dioxide, a small nonpolar molecule, can freely pass through the lipid bilayer. positively charged potassium ions can freely pass through the lipid bilayer. the inner core of the lipid bilayer repels polar molecules like water. the outer parts of the lipid bilayer repel polar molecules like water.

Explanation:

1. Small non - polar molecules like carbon dioxide can diffuse freely through the lipid bilayer due to its non - polar nature.
2. Ions such as positively charged potassium ions cannot freely pass through the lipid bilayer because the non - polar interior of the bilayer repels charged species.
3. The inner core of the lipid bilayer is non - polar and repels polar molecules like water.
4. The outer parts of the lipid bilayer are hydrophilic (polar - loving) and interact with water, not repel it.

Answer:

A. Carbon dioxide, a small nonpolar molecule, can freely pass through the lipid bilayer.
C. The inner core of the lipid bilayer repels polar molecules like water.