Question

cell drinking, liquid materials moving into the cell your responses passive (incorrect)
materials moving out of the cell active (correct)
movement of water through a semi - permeable membrane passive (correct)
pumps ions across membrane from low to high concentration active (correct)
movement across membrane with help of channel protein active (incorrect)
gas crossing across membranes from high to low passive (correct)
materials moving into the cell active (correct)
cell eating, solid materials moving into the cell active (correct)

1. passive or active transport (8 points)

☑ facilitated diffusion a. passive
b. active
☑ phagocytosis
☑ osmosis
☑ simple diffusion
☑ sodium potassium pump
☑ endocytosis
☑ exocytosis
☑ pinocytosis

Explanation:

For each transport process:

• facilitated diffusion: It uses channel proteins to move substances down the concentration gradient (no energy needed), so it's passive. So choose a. passive.
• phagocytosis: It's a type of endocytosis where the cell "eats" solid particles, requiring energy, so it's active. Choose b. active.
• osmosis: Movement of water down the concentration gradient (no energy), passive. Choose a. passive.
• simple diffusion: Substances move down the concentration gradient (no energy), passive. Choose a. passive.
• sodium potassium pump: Pumps ions against the concentration gradient (needs energy), active. Choose b. active.
• endocytosis: Process of bringing substances into the cell, requires energy, active. Choose b. active.
• exocytosis: Process of releasing substances out of the cell, requires energy, active. Choose b. active.
• pinocytosis: Cell "drinking" (taking in liquid), requires energy, active. Choose b. active.

Answer:

s:
facilitated diffusion: a. passive
phagocytosis: b. active
osmosis: a. passive
simple diffusion: a. passive
sodium potassium pump: b. active
endocytosis: b. active
exocytosis: b. active
pinocytosis: b. active