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Chapter 6: Microbial Metabolism

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The synthesis of which of the following cell components is dependent on a template?

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(A) Lipopolysaccharide

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(B) Peptidoglycan

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(C) Capsular polysaccharide

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(D) Deoxyribonucleic acid

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(E) Phospholipids

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The synthesis of which of the following cell components is determined entirely by enzyme specificities?

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(A) DNA

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(B) Ribosomal RNA

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(C) Flagella

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(D) Lipopolysaccharide

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(E) Protein

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The steps leading to the synthesis of peptidoglycan occur in the cytoplasm, on the cytoplasmic membrane, and extracellularly. Which antibiotic inhibits an extracellular step in peptidoglycan biosynthesis?

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(A) Cycloserine

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(B) Rifampin

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(C) Penicillin

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(D) Bacitracin

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(E) Streptomycin

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Amino acids are found in the protein, peptidoglycan, and capsule of bacteria. Which of the following amino acids is found only in peptidoglycan?

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(A) l-Lysine

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(B) Diaminopimelic acid

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(C) d-Glutamate

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(D) l-Alanine

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(E) None of the above

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The ability to use compounds and ions other than oxygen as terminal oxidants in respiration is a widespread microbial trait. This capacity is called

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(A) Photosynthesis

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(B) Fermentation

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(C) Anaerobic respiration

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(D) Substrate phosphorylation

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(E) Nitrogen fixation

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The primary route of carbon assimilation used by organisms that can use CO2 as a sole source of carbon is

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(A) Hexose monophosphate shunt

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(B) Entner-Doudoroff pathway

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(C) Embden-Meyerhof pathway

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(D) Glyoxalate cycle

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(E) Calvin cycle

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The peptidoglycan biosynthetic pathway is of particular importance in medicine because it provides a basis for selective antibacterial action of several chemotherapeutic agents. All of the following antibiotics ...

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