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

1. 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:

1a. Engulfing food by amoeba is an energy - consuming process as it involves movement and formation of pseudopodia.
1b. Since it requires energy, it is active transport.
1c. Engulfing of substances into the cell is endocytosis.
2a. Expelling waste also requires energy for the cell to push the waste out.
2b. As it needs energy, it is active transport.
2c. Expelling substances out of the cell is exocytosis.

Answer:

1a. Yes
1b. Active
1c. Endocytosis
2a. Yes
2b. Active
2c. Exocytosis