Question

identify these substances as those that can easily move through the lipid bilayer of a plasma membrane and those that are repelled by the lipid bilayer and, therefore, need help from a protein to cross the plasma membrane. move easily through the lipid bilayer of the plasma membrane need help from a protein to cross the membrane because they are repelled by the lipid bilayer answer bank amino acids oxygen potassium ions sodium chloride glucose

Explanation:

Small, non - polar molecules can move easily through the lipid bilayer. Oxygen is small and non - polar. Larger, polar, or charged molecules are repelled by the non - polar lipid bilayer and need protein help. Amino acids are polar or charged, potassium ions are charged, sodium chloride is ionic, and glucose is a large polar molecule.

Answer:

Move easily through the lipid bilayer of the plasma membrane: oxygen
Need help from a protein to cross the membrane because they are repelled by the lipid bilayer: amino acids, potassium ions, sodium chloride, glucose