Question

Which of the following is NOT one of the four steps involved in phagocytosis?

A) attachment
B) internalization
C) degradation
D) exocytosis
E) interleukin release

Answer 1

The four steps involved in phagocytosis are attachment, internalization, degradation, and exocytosis. Interleukin release is not one of these steps.

Step-by-step explanation:

The four steps involved in phagocytosis are:

1. Attachment: The phagocyte extends its plasma membrane to envelop the pathogen.
2. Internalization: The pathogen becomes enclosed within a phagosome, which fuses with a lysosome to form a phagolysosome.
3. Degradation: Digestive enzymes and acids from the lysosome kill and digest the pathogen in the phagolysosome.
4. Exocytosis: Soluble debris from the destroyed pathogen is expelled from the cell through exocytosis.

Therefore, the correct answer is E) interleukin release, as it is not one of the steps involved in phagocytosis.