Suppose a white blood cell destroys invading bacteria by phagocytosis. Which statement best describes this process?

Question

a
The white blood cells are using diffusion and therefore are not using energy.
b
The white blood cells are using passive transport and therefore are not using energy.
c
The white blood cells are using osmosis and therefore are using energy.
d
The white blood cells are using active transport, and therefore are using energy.

Answer 1

The best statement that describes the process of phagocytosis by white blood cells is:

d. The white blood cells are using active transport, and therefore are using energy.

Phagocytosis is an active process where cells engulf large particles, such as bacteria, and it requires energy (typically in the form of ATP) because the cell membrane must change shape to surround and internalize the particle.