The answer is C. This is the only choice that has to do with location.
Answer:
The plasma membrane is selectively permeable
Explanation:
hydrophobic molecules and small polar molecules can diffuse through the lipid layer, but ions and large polar molecules cannot. Integral membrane proteins enable ions and large polar molecules to pass through the membrane by passive or active transport.
C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
c. because only male repoduce sperm
The portion of the pharynx that receives air from the internal nares is the nasopharynx.
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-Payshence xoxo
