IMMUNOLOGY

OVERVIEW OF THE IMMUNE SYSTEM

MACROPHAGES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is step five in phagocytosis?
A
Chemotaxis
B
Release
C
Phagosyme-lysosome fusion
D
Destruction
Explanation: 

Detailed explanation-1: -When a phagocyte ingests bacteria (or any material), its oxygen consumption increases. The increase in oxygen consumption, called a respiratory burst, produces reactive oxygen-containing molecules that are anti-microbial.

Detailed explanation-2: -The phagocyte digests the ingested particle with hydrolytic enzymes, which are contained within membrane-enclosed sacs called lysosomes found within the cell. Phagocytic enzymes are secreted into the vacuole in which digestion takes place.

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