MCQ IN MEDICINE

MEDICINE MCQ

INFECTIOUS DISEASES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Some human white blood cells help destroy pathogenic bacteria by
A
causing mutations in the bacteria
B
engulfing and digesting the bacteria
C
producing toxins that compete with bacterial toxins
D
inserting part of their DNA into the bacterial cells
Explanation: 

Detailed explanation-1: -Phagocytes are a type of white blood cell that move by amoeboid action. They send out pseudopodia which allows them to surround invading microbes and engulf them. Phagocytes release digestive enzymes which break down the trapped microbes before they can do any harm. This process is called phagocytosis.

Detailed explanation-2: -They are attracted towards the infective agents, then surround and engulf them. Once inside the cell, these white cells then release chemicals that break the organism down and destroy it. Other white cells, called lymphocytes, target attacks in another way, by making antibodies.

Detailed explanation-3: -Macrophages are large white blood cells that reside in tissues that specialize in engulfing and digesting cellular debris, pathogens and other foreign substances in the body.

There is 1 question to complete.