Question

MCQ
33. The first antibiotic called penicillin was extracted from :
(a) a bacterium
(b) a protozoan (c) a fungus
(d) an alga
34)Which of the following is not a communicable disease?
(a) cholera
(b) cancer
(c) chickenpox
(d) malaria
35)Which of the following increase the fertility of soil ?
A. Lactobacillus bacteria B. Rhizobium bacteria C. Spirogyra algae D. Blue-green algae
(a) A and B
(b) B and C
(c) A and D
(d) B and D
36)Which of the following cannot be used as a food preservative ?

(a) sodium metabisulphite (b) sodium hydroxide (c) h
37). Which of the following disease is not caused by bacteria ?
(a) cholera
(b) typhoid
(c) tuberculosis
(d) measles
38) The micro-organisms which can reproduce and multiply only inside the cells of other organisms are:
(a) protozoa
(b) fungi
(c) bacteria
(d) viruses
(39) The dengue disease spread by Aedes mosquito is caused by:
(a) bacteria
(b) virus
(c) protozoan
(d) fungus​

Answer 1

Answer: 33.(a)  34.(d)  35.(d)  36.(a)  37.(d)  38.(d) 39.(d)

Explanation:

Answer 2

Explanation:

33 ka c

34 ka a

38 ka d

39 ka b