37.The major function of the cell wall is
(A) to facilitate cell divison (B) to serve as a diffusion barrier
(C) to allow for bacterial motility (D) to provide rigid support and prevent lysis
(E) to serve as an anchor for proteins
38.Penicillin and vancomycin prevent cross-bridge formation between
(A) diaminopimelic acid and D-glutamic acid (B) L-alanine and D-alanine
(C) diaminopimelic acid and D-alanine (D) diaminopimelic acid and L-alanine
(E) D-glutamic acid and D-alanine
39.An outer membrane is found in
(A) all cells (B) all prokaryotes
(C) all bacteria (D) all Gram-negative bacteria
(E) all Gram-positive bacteria
40.The complex of DNA polymerase with its accessory components is called
(A) nucleoid (B) nucleus
(C) origin of replication (D) replisome
(E) setpum
41.Which of the following is the bacterial homolog of tubulin?
(A) FtsZ (B) MreB
(C) CreS (D) MamK
(E) MinD
42.Which of the following is an actin homolog that helps maintain cell shape?
(A) FtsZ (B) MreB
(C) CreS (D) MamK
(E) MinD
43.Which of the following is least involved in photosynthesis?
(A) phycobilisomes (B) thylakoids
(C) carboxysomes (D) chlorophyll
(E) stalks
44.Capsule is composed of
(A) nucleic acids (B) lipoproteins
(C) cardiolipin (D) polysaccharides
(E) murein
45.Pili and fimbriae are composed of
(A) nucleic acids (B) lipopolysaccharides
(C) murein (D) polysaccharides
(E) amino acids
46.Which of the following subcellular structures is involved in adherence?
(A) gas vesicles (B) storage granules
(C) pili (D) thylakoids
(E) phycobilisomes
47.As temperatures drop, membrane fluidity decreases. Which of the following changes to phospholipids will help maintain correct bacterial membrane fluidity under cold temperatures?
(A) Formation of lipid monolayer.
(B) An increase in the length of the fatty acid tails.
(C) An increase in unsaturated fatty acids.
(D) An increase in saturated fatty acids.
(E) A switch from ester linkages between fatty acids and glycerol to ether linkages.
48.Which of the following statements regarding chemotaxis is true?
(A) Attractants cause counterclockwise rotation of the flagella that makes the cells tumble
(B) Attractants cause clockwise rotation of the flagella that makes the cells run
(C) Attractants cause counterclockwise rotation of the flagella that makes the cells run
(D) Attractants cause clockwise rotation of the flagella that makes the cells tumble
(E) None of the above is true.
49.With 5 g of NaCl available, how much water is needed to make a solution at a concentration of 10 mg/mL?
(A) 0.5 mL (B) 5 mL
(C) 50 mL (D) 500 mL
(E) 5 L
50.How much of 1 M glucose stock solution is needed to make a 500-mL solution containing 25 mM glucose?
(A) 12.5 μL (B) 125 μL
(C) 12.5 mL (D) 125 mL
(E) 1.25 L
37.The major function of the cell wall is
(A) to facilitate cell divison (B) to serve as a diffusion barrier
(C) to allow for bacterial motility (D) to provide rigid support and prevent lysis
(E) to serve as an anchor for proteins
38.Penicillin and vancomycin prevent cross-bridge formation between
(A) diaminopimelic acid and D-glutamic acid (B) L-alanine and D-alanine
(C) diaminopimelic acid and D-alanine (D) diaminopimelic acid and L-alanine
(E) D-glutamic acid and D-alanine
39.An outer membrane is found in
(A) all cells (B) all prokaryotes
(C) all bacteria (D) all Gram-negative bacteria
(E) all Gram-positive bacteria
40.The complex of DNA polymerase with its accessory components is called
(A) nucleoid (B) nucleus
(C) origin of replication (D) replisome
(E) setpum
41.Which of the following is the bacterial homolog of tubulin?
(A) FtsZ (B) MreB
(C) CreS (D) MamK
(E) MinD
42.Which of the following is an actin homolog that helps maintain cell shape?
(A) FtsZ (B) MreB
(C) CreS (D) MamK
(E) MinD
43.Which of the following is least involved in photosynthesis?
(A) phycobilisomes (B) thylakoids
(C) carboxysomes (D) chlorophyll
(E) stalks
44.Capsule is composed of
(A) nucleic acids (B) lipoproteins
(C) cardiolipin (D) polysaccharides
(E) murein
45.Pili and fimbriae are composed of
(A) nucleic acids (B) lipopolysaccharides
(C) murein (D) polysaccharides
(E) amino acids
46.Which of the following subcellular structures is involved in adherence?
(A) gas vesicles (B) storage granules
(C) pili (D) thylakoids
(E) phycobilisomes
47.As temperatures drop, membrane fluidity decreases. Which of the following changes to phospholipids will help maintain correct bacterial membrane fluidity under cold temperatures?
(A) Formation of lipid monolayer.
(B) An increase in the length of the fatty acid tails.
(C) An increase in unsaturated fatty acids.
(D) An increase in saturated fatty acids.
(E) A switch from ester linkages between fatty acids and glycerol to ether linkages.
48.Which of the following statements regarding chemotaxis is true?
(A) Attractants cause counterclockwise rotation of the flagella that makes the cells tumble
(B) Attractants cause clockwise rotation of the flagella that makes the cells run
(C) Attractants cause counterclockwise rotation of the flagella that makes the cells run
(D) Attractants cause clockwise rotation of the flagella that makes the cells tumble
(E) None of the above is true.
49.With 5 g of NaCl available, how much water is needed to make a solution at a concentration of 10 mg/mL?
(A) 0.5 mL (B) 5 mL
(C) 50 mL (D) 500 mL
(E) 5 L
50.How much of 1 M glucose stock solution is needed to make a 500-mL solution containing 25 mM glucose?
(A) 12.5 μL (B) 125 μL
(C) 12.5 mL (D) 125 mL
(E) 1.25 L
