Question

complete with active or passive transport.
a. passage of water through aquaporins select
b. sodium - potassium pump select
c. diffusion of oxygen gas through the lipid bilayer select
d. facilitated diffusion select
e. transporting molecules against their concentration gradient select
f. osmosis passive
g. exocytosis select
h. requires energy input active
question 9
what is membrane potential?

Explanation:

• a. Water passage through aquaporins is passive transport as it occurs along the concentration gradient without energy input.
• b. The sodium - potassium pump is active transport as it moves ions against their concentration gradient using ATP.
• c. Diffusion of oxygen gas through the lipid bilayer is passive transport as it is a simple diffusion down the concentration gradient.
• d. Facilitated diffusion is passive transport as it uses transport proteins to move substances along the concentration gradient without energy.
• e. Transporting molecules against their concentration gradient is active transport as it requires energy.
• f. Osmosis is passive transport, the diffusion of water across a semi - permeable membrane.
• g. Exocytosis is active transport as it involves the cell using energy to release substances out of the cell.
• h. Requiring energy input indicates active transport.

Answer:

a. Passive
b. Active
c. Passive
d. Passive
e. Active
f. Passive
g. Active
h. Active