Question

which protein type is specifically involved in facilitated diffusion?
a. channel proteins
b. enzymes
c. aquaporins
d. atp synthase

which transport process requires energy to move molecules against their concentration gradient?
a. simple diffusion
b. osmosis
c. facilitated diffusion
d. active transport

Explanation:

• First question: Facilitated diffusion involves proteins that help substances cross the membrane. Channel proteins are a type of protein that specifically aid in facilitated diffusion by providing a passageway. Enzymes are for catalyzing reactions, aquaporins are a specific type of channel protein for water (but the general term for facilitated diffusion is channel proteins), and ATP synthase is for ATP production.
• Second question: Simple diffusion, osmosis, and facilitated diffusion are passive transport processes that do not require energy as they move molecules along the concentration gradient. Active transport is the process that requires energy (usually in the form of ATP) to move molecules against their concentration gradient.

Answer:

• First question: a. Channel proteins
• Second question: d. Active transport