Specific membrane components, particularly ________, determine which substances are transported across the membrane.
A) phospholipids
B) proteins
C) ions
D) polysaccharides
E) leaflets

Question

Quizplus · Accepted Answer

Proteins, such as transporters and channels, play a critical role in determining which substances are transported across the membrane. They provide specific pathways and binding sites for certain molecules to pass through the membrane. While phospholipids make up the bulk of the membrane structure, they do not play as direct a role in determining which substances are transported. Ions may be transported through specific channels or transporters, but they are not membrane components themselves. Polysaccharides and leaflets are not directly involved in membrane transport.

Specific Membrane Components, Particularly ________, Determine Which Substances Are Transported