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


Correct Answer: A. gram-positive bacteria are thicker than gram-negative bacteria

12. Peptidoglycan is also known as

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


Correct Answer: B. murein mucopeptide

13. Genetic system is located in the prokaryotes in

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


Correct Answer: D. all of these

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


Correct Answer: A. Pore protein (porin)

15. The last step in the 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


Correct Answer: B. attaching two amino acids to form a cross-link

Comments

No comments yet. Why don’t you start the discussion?

Leave a Reply

Your email address will not be published. Required fields are marked *

one + one =