Bacteria Morphology – Section 1

6. Which of the following may contain fimbriae?

A. Gram-positive bacteria
B. Gram-negative bacteria
C. Both (a) and (b)
D. None of these

Correct Answer: B. Gram-negative bacteria

7. 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%

Correct Answer: A. 50% or more

8. Bacteria having no flagella are unable to

A. move
B. reproduce
C. stick to tissue surfaces
D. grow in nutrient agar

Correct Answer: A. move

9. 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

Correct Answer: D. All of these

10. 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

Correct Answer: B. lysozyme

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