E-PolyLearning

156. Toxin produced by some bacterial species that is lethal to other bacterias is named as
a. Bacteriocins
b. Bacterial toxin
c. Poison
d. Lethal secretion
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Answer: (a).Bacteriocins

157. Process of formation of 'spores' in certain bacterias is termed as
a. Sporulation
b. Spore formation
c. Resistant structure formation
d. Capsules
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Answer: (a).Sporulation

158. Endotoxin is present in outer membrane of cell wall of gram-negative bacteria, known as
a. Polysaccharides
b. Lipopolysaccharides
c. Sugars
d. Lipid
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Answer: (b).Lipopolysaccharides

159. Approximate number of gene in prokaryotic 'DNA' is
a. 200
b. 2000
c. 2500
d. 2100
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Answer: (b).2000

160. On basis of shape 'bacterias' are classified into
a. 2 Groups
b. 3 Groups
c. 4 Groups
d. 5 Groups
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Answer: (b).3 Groups