Microorganisms-Friends and Foe

Microorganisms friends and foe Worksheet-7

Multiple Choice Questions:

31. Microorganism are classifies under ______ group.

(A) One              (B) Two             (C) Three           (D) Four

32. Viruses reproduce only inside the cells of the ______.

(A) Plants          (B) Animals      (C) Bacteria      (D) Host

33. Which of the following disease is caused by virus?

Microorganisms friends and foe Worksheet-8

Multiple Choice Questions:

41. Streptomycin, tetracycline and erythromycin are-

(A)Vaccine        (B) Treatment  (C) Antibiotics  (D) None

42. In presence of microorganism, human body produces-

(A) Antibiotics                              (B) Antibodies

(C) Vaccine                                    (D) All

Microorganisms friends and foe Worksheet-9

Multiple Choice Questions:

51. Sodium meta-bisulphite is a/an-

(A) Antibiotic    (B) Antibody     (C) Preservative         (D) All

52. How sugar works as preservative?

(A) By reducing moisture content

(B) By reducing temperature

(C) By increasing temperature

(D) All