MICRO ORGANISMS MICRO BIOLOGY QUESTIONS

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6. Mycoplasmas are different from the other prokaryotes by
A. presence of chitin in cell walls
B. presence of murrain in cell walls
C. presence of proteins in cell walls
D. absence of cell wall itself

Answer: Option D

Explanation:

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7. Evolutionary relationships between groups of organisms are determined using which of the following type of information?
A. Comparisons of nucleotide sequences
B. Comparisons of biochemical pathways
C. Comparisons of structural features
D. All of the above

Answer: Option D

Explanation:

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8. Which of the following is not true for eukaryotic cells?
A. Nucleus is bounded by nuclear membrane
B. Chromosomes contain histones
C. Chloroplasts and mitochondria contains 70S ribosomes
D. Gas vacuoles are present

Answer: Option D

Explanation:

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9. Which of the following is not true for prokaryotic organism?
A. Nucleus is not bounded by nuclear membrane
B. Chromosomes does not contain histones
C. 80S ribosomes are distributed in cytoplasm
D. Cell wall contains peptidoglycan as one of the major component

Answer: Option C

Explanation:

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10. Gram staining was introduced by
A. Christian gram
B. Alfred Gram
C. Robertcook
D. Louis Pasteur

Answer: Option A

Explanation:

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