Question

1. passive or active transport (5 points)

uses atp
\ta. passive
does require energy
\tb. active
does not require energy
movement from high to low concentration
movement from low to high concentration

Explanation:

1. For "uses ATP": Active transport requires energy (ATP) to move substances, while passive does not. So matches b (active).
2. For "does require energy": Active transport needs energy, passive doesn't. Matches b (active).
3. For "does not require energy": Passive transport (like diffusion, osmosis) doesn't need energy. Matches a (passive).
4. For "movement from high to low concentration": Passive transport (e.g., diffusion) moves down concentration gradient (high to low). Matches a (passive).
5. For "movement from low to high concentration": Active transport moves against gradient (low to high) using energy. Matches b (active).

Answer:

• uses ATP: b. active
• does require energy: b. active
• does not require energy: a. passive
• movement from high to low concentration: a. passive
• movement from low to high concentration: b. active