Need help with these questions please. 1. During biosynthesis of peptidoglycan,

ID: 176226 • Letter: N

Question

Need help with these questions please.

1. During biosynthesis of peptidoglycan, the addition of crosslinks that provide stability to the structure is called

A) bactoprenol formation

B) transpeptidation

C) lysozyme activity

D) autolysination

2. Allosteric enzymes have two important binding sites called the

A) active site and the allosteric site

B) active site and inhibitory site

C) allosteric site and the effector site

D) allosteric site and the passive site

3. Which of the following is/are true about the action of the antibiotic penicillin?

A) it works on archea and bacteria

B) it prevents peptide crosslinking, weakening the cell wall

C) it affects recycling of bactoprenol, weakening the cell wall

D) B and C

4. Damage to DNA can be repaired by error-proof mechanisms that rely on

A) acquiring a new copy of the damaged sequence by transformation

B) the damage being limited to a single strand allowing the other to be used as a template

C) the damage being complementary on both strands allowing complete replacement

D) special ribosome activity

1. Bactoprenol transports peptidoglycan monomers across the cell membrane to insert onto the existing peptidoglycan

A) bactoprenol formation

2. Two binding sites: (1) a substrate binding site (the active site) and (2) a cofactorbinding site (the allosteric site)

A) active site and the allosteric site

3. B) it prevents peptide crosslinking, weakening the cell wall

4. C) the damage being complementary on both strands allowing complete replacement

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