Microbiology - Bacteria Morphology

Exercise :: Bacteria Morphology - Section 1

  • Bacteria Morphology - Section 1
11. 

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

Answer: Option A

Explanation:

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12. 

Peptidoglycan is also known as

A. N-acetyl muramic acid
B. murein mucopeptide
C. N acetylglucosamine
D. mesodiaminopimetic acid

Answer: Option B

Explanation:

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13. 

Genetic system is located in the prokaryotes in

A. nucleoid
B. chromatin
C. nuclear material
D. all of these

Answer: Option D

Explanation:

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14. 

Which is most likely to be exposed on the surface of a gram-negative bacterium?

A. Pore protein (porin)
B. Protein involved in energy generation
C. Lipoteichoic acid
D. Phospholipids

Answer: Option A

Explanation:

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15. 

The last step in synthesis of peptidoglycan is

A. attachment of a peptide to muramic acid
B. attaching two amino acids to form a cross-link
C. attachment of a portion of peptidoglycan to a membrane lipid
D. binding of penicillin to a membrane protein

Answer: Option B

Explanation:

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