E-PolyLearning

96. Peptidoglycan accounts for __________ of the dry weight of cell wall in many gram positive bacteria
a. 50% or more
b. About 10%
c. 11%+ 0.22%
d. About 20%
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Answer: (a).50% or more

97. Bacteria having no flagella are unable to
a. move
b. reproduce
c. stick to tissue surfaces
d. grow in nutrient agar
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Answer: (a).move

98. Which of the following is true about cell wall of gram-positive bacteria?
a. It consists of multiple layers
b. It is thicker than that associated with gram-negative bacteria
c. It contains teichoic acids
d. All of these
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Answer: (d).All of these

99. The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as
a. lipase
b. lysozyme
c. pectinase
d. peroxidase
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Answer: (b).lysozyme

100. The cell wall of
a. gram-positive bacteria are thicker than gram-negative bacteria
b. gram-negative bacteria are thicker than gram-positive bacteria
c. both have same thickness but composition is different
d. none of these
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Answer: (a).gram-positive bacteria are thicker than gram-negative bacteria