Question

Bacteria use all of the following methods to escape detection and destruction by a host’s defense system except:

Question 4 options:

A)	resisting lysosomal destruction.

B)	encapsulation.

C)	lysing the host cell.

D) changing antigens.

5. This form of hepatitis is acquired by ingesting contaminated food and/or water:

A)	Hepatitis A.

B)	Hepatitis B.

C)	Hepatitis D.

D)	Hepatitis C.

Answer 1

Ans. 4 (c) lysing the host cell

Capsulation helps bacteria. It prevents phagocytosis of bacterial cell. Changing antigens is an option for bactera to get rid of antibodies created by immune system. Finally option A suggests that resisting the lysosomal destruction prevents lysing of bacterial cell.

Ans. 5 (A) Hepatitis A

Only hepatitis A spread by ingestion of contaminated food or water. While hepatitis B spread by infectious blood, sexual contact and breastfeeding. Hepatitis C also spreads by contaminated blood, unsterile surgical equipment. Hepatitis D also occur from infectious blood, homosexual(male) sex and from people having hepatitis B.