BACTERIA MORPHOLOGY MICRO BIOLOGY QUESTIONS

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36. In eukaryotic cells, ribosomes are
A. 70S
B. 60S
C. 80S
D. Not specific

Answer: Option C

Explanation:

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37. Porins are located in
A. the outer membrane of gram-negative bacteria
B. the peptidoglycan layer of gram-positive bacteria
C. the cytoplasmic membrane of both gram-negative and gram-positive bacteria
D. the periplasmic space of gram-negative bacteria

Answer: Option A

Explanation:

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38. Which of the following is exposed on the outer surface of a gram-negative bacterium?
A. O-antigen of lipopolysaccharide (LPS)
B. Polysaccharide portion of lipoteichoic acid (LTA)
C. Braun lipoprotein
D. Electron transport system components

Answer: Option A

Explanation:

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39. Which of the following does not contain protein?
A. Pili
B. Flagellum
C. Lipoteichoic acid
D. Porin

Answer: Option C

Explanation:

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40. Swimming towards a chemical of bacteria is termed as
A. positive chemotaxis
B. negative chemotaxis
C. phototaxis
D. magnetotaxis

Answer: Option A

Explanation:

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