Question

part 7: active transport
1 in the picture to the right, an amoeba engulfs a particle of food
a does this require energy? yes
b is this active or passive transport? active
c is this endocytosis or exocytosis? endocytosis
2 in the picture to the right, an amoeba expels waste
a does this require energy? yes
b is this active or passive transport? active
c is this endocytosis or exocytosis? exocytosis

Explanation:

1. a. Amoeba engulfing food is active transport which requires energy as it goes against the concentration - gradient.

• b. Since it requires energy, it is active transport.
• c. Engulfing of particles is endocytosis.

1. a. Amoeba expelling waste also requires energy as it may involve moving substances against a gradient.

• b. As it needs energy, it is active transport.
• c. Expelling waste from the cell is exocytosis.

Answer:

1. a. Yes

• b. Active
• c. Endocytosis

1. a. Yes

• b. Active
• c. Exocytosis