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Microbiology Chapter 10 Test Bank: Practice Questions & Answers

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2026/2027

Institution Medical Microbiology

Course Medical Microbiology

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Microbiology Chapter 10 Test Bank: Practice Questions & Answers

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Chapter 10 (Test Bank).pdf

Substances that are naturally produced by certain A
microorganisms that can inhibit or destroy other
microorganisms are called

A. antibiotics.
B. narrow-spectrum drugs.
C. semisynthetic drugs.
D. synthetic drugs.
E. broad-spectrum drugs.

Antimicrobials that are effective against a wide variety of E
microbial types are termed

A. antibiotics.
B. narrow-spectrum drugs.
C. semisynthetic drugs.
D. synthetic drugs.
E. broad-spectrum drugs.

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Chapter 10 (Test Bank).pdf Chapter 10 (Test Bank).pdf10/20/2026, 4:09:33 AM

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Chapter 10 (Test Bank).pdf

Antibiotics are derived from all of the following except C

A. Penicillium.
B. Bacillus.
C. Staphylococcus.
D. Streptomyces.
E. Cephalosporium.

Important characteristics of antimicrobial drugs include E

A. low toxicity for human tissues.

B. high toxicity against microbial cells.

C. do not cause serious side effects in humans.

D. stable and soluble in body tissues and fluids.

E. All of the choices are correct.

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Chapter 10 (Test Bank).pdf

The use of a drug to prevent a person at risk of an D
imminent infection is called

A. competitive inhibition.
B. synergism.
C. prebiotics.
D. prophylaxis.
E. lantibiotics.

The use of any chemical in the treatment, relief, or B
prophylaxis of a disease is called

A. prophylaxis.
B. chemotherapy.
C. selective toxicity.
D. nephrotoxicity.
E. synergism.

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Chapter 10 (Test Bank).pdf

Penicillins and cephalosporins D

A. block folic acid synthesis.

B. attach to the 30S ribosomal subunit and disrupt
protein synthesis.

C. damage cell membranes.

D. block peptidases that cross-link glycan molecules.

Selective toxicity refers to C

A. damage to pathogenic organisms.

B. damage to prokaryotic cell membranes.

C. damage to the target organisms but not host cells.

D. damage to nucleic acids.

E. None of the choices is correct.

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Chapter 10 (Test Bank).pdf Chapter 10 (Test Bank).pdf10/20/2026, 4:09:33 AM

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Number of pages: 36
Written in: 2026/2027
Type: Exam (elaborations)
Contains: Questions & answers

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