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Peptidoglycan: Quiz

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Question 1: [5] Mutations in transpeptidases that lead to reduced interactions with an antibiotic are a significant source of emerging ________.
Antibiotic resistancePharmacologyMultiple drug resistanceDrug resistance

Question 2: The peptidoglycan layer is substantially thicker in Gram-positive ________ (20 to 80 nanometers) than in Gram-negative bacteria (7 to 8 nanometers), with the attachment of the S-layer.
CorynebacteriumBacteriaGram-negative bacteriaGram-positive bacteria

Question 3: ________ between amino acids in different linear amino sugar chains occurs with the help of the enzyme transpeptidase and results in a 3-dimensional structure that is strong and rigid.
Disulfide bondProtein–protein interactionProteinCross-link

Question 4: ________: Peptidoglycan (NAM, NAG, DAP)
ChloroplastCell envelopeCell wallBacteria

Question 5: Some ________ have a similar layer of pseudopeptidoglycan or pseudomurein, where the sugar residues are β-(1,3) linked N-acetylglycosamine and N-acetyltalosaminuronic acid.
BacteriaArchaeaMetabolismMicroorganism

Question 6: Peptidoglycan, also known as murein, is a polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacteria (Eubacteria, not ________), forming the cell wall.
ArchaeaMetabolismMicroorganismAcidobacteria







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