1. Microbes are found
(A) in soil
(B) in air
(C) in water
(D) everywhere
[Ans. (D)]
2. The microscopic proteinous infectious agents are called
(A) protozoa
(B) fungi
(C) prions
(D) bacteria
(Ans. (C)]
3. The nutritive media for growing bacteria and other microorganisms in the laboratory is called
(A) colonies
(B) culture media
(C) baking media
(D) fermentation
(Ans. (B)]
4. Who initiated Ganga and Yumna Action plan?
(A) IARI
(B) Ministry of Environment and forest
(C) KVIC
(D) None
[Ans.(B)]
5. Which role is played by lactic acid bacteria (LAB) in our stomach?
(A) Beneficial
(B) Harmful
(C) Neutral
(D) All of these
[Ans. (A)]
6. The dough used for making bread is fermented by
(A) bacteria
(B) Yeast
(C) fungi
(D) algae
[Ans. (B)]
7. Which of the following is used in preparing cheese?
(A) algae
(B) viruses
(C) microbes
(D) prions
[Ans.(C)]
8. The large vessels for growing microbes on an industrial scale are called
(A) Petri dish
(B) digestors
(C) biogas vessel
(D) fermenters
[Ans. (D)]
9. Which of the following organisms is used in the production of beverages?
(A) Penicillium notatum
(B) Saccharomyces cerevisiae
(C) Aspergillus niger
(D) Clostridium butylicum
[Ans. (B)]
10. The gas responsible for puffing-up appearance of dough comes from
(A) aerobic respiration
(B) fermentation
(C) photosynthesis
(D) photorespiration
[(Ans. (B)]
11. The chemical substances produced by some microbes which can kill or retard the growth of other microbes are called
(A) toddy
(B) lactic acid
(C) antibiotics
(D) ethanol
[Ans.(C)]
12. Which of the following antibiotics was discovered first?
(A) Streptomycin
(B) Neomycin
(C) Erythromycin
(D) Penicillin
[(Ans. (D)]
13. Acetic acid is produced by a
(A) fungus
(B) bacterium
(C) Yeast
(D) virus
[(Ans. (B)]
14. Citric acid is produced by
(A) Acetobacter aceti
(a) bacterium)
(B) Yeast (a fungus)
(C) Aspergillus niger (a fungus)
(D) Streptococcus (a bacterium)
[Ans.(C)]