Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 12, Problem 3MCQ
Summary Introduction
Introduction:
Antimicrobial agents differ in its mode of action, including inhibition of cell wall, inhibition of protein and
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Students have asked these similar questions
Which of the following best describes the mechanism of action of the antibiotic streptomycin?
A. it disrupts protein synthesis in resistant bacteria.
B. Streptomycin inhibits cell wall synthesis in all bacterial species.
C. Streptomycin creates mutations in bacteria which cause them to become resistant.
D. It disrupts protein synthesis in nonresistant bacteria.
Most antiviral drugs:
a) damage the cell wall
b) are nucleoside analogs
c) are enzymes inhibitors
d) prevent viruses from entering cells
e) damage the plasma membrane
Which mechanism of antibiotic resistance is most likely to result in "cross resistance" against multiple antibiotic drugs resulting in the development of "superbugs"?
a. Modification of drug target
b. Enzyme deactivation of drug
c. Efflux pumps
d. Blocking entry of drug into the cell
Chapter 12 Solutions
Microbiology: A Systems Approach
Ch. 12.1 - State the main goal of antimicrobial treatment.Ch. 12.1 - Identify sources of the most commonly used...Ch. 12.1 - Summarize two methods for testing antimicrobial...Ch. 12.1 - Prob. 4AYPCh. 12.2 - Prob. 5AYPCh. 12.2 - Describe the five major targets of antimicrobial...Ch. 12.2 - Identify which categories of drugs are most...Ch. 12.3 - Prob. 8AYPCh. 12.3 - Trace the development of penicillin...Ch. 12.3 - Prob. 10AYP
Ch. 12.3 - Prob. 11AYPCh. 12.3 - Prob. 12AYPCh. 12.3 - Prob. 13AYPCh. 12.3 - Identify the cellular target of quinolones, and...Ch. 12.3 - Prob. 15AYPCh. 12.3 - Prob. 16AYPCh. 12.3 - Prob. 17AYPCh. 12.3 - Prob. 18AYPCh. 12.3 - Describe two major modes of action of antiviral...Ch. 12.4 - Prob. 20AYPCh. 12.4 - Prob. 21AYPCh. 12.4 - Discuss at least three novel antimicrobial...Ch. 12.5 - Distinguish between drug toxicity and allergic...Ch. 12.5 - Prob. 24AYPCh. 12 - Prob. 1MCQCh. 12 - Prob. 2MCQCh. 12 - Prob. 3MCQCh. 12 - Microbial resistance to drugs is acquired through...Ch. 12 - Prob. 5MCQCh. 12 - Prob. 6MCQCh. 12 - Prob. 7MCQCh. 12 - Which of the following modes of action would be...Ch. 12 - Prob. 9MCQCh. 12 - Prob. 10MCQCh. 12 - Prob. 11TFCh. 12 - Prob. 12TFCh. 12 - Biofilms are difficult to treat and do not always...Ch. 12 - Prob. 14TFCh. 12 - Prob. 15TFCh. 12 - Construct a paragraph describing the...Ch. 12 - Prob. 2CTQCh. 12 - Antibiotic-resistance genes, as well as other...Ch. 12 - Prob. 4CTQCh. 12 - What is the significance of the bottom row in...Ch. 12 - Figure 12.5. Where could penicillinase affect each...Ch. 12 - From chapter 6, process figure 6.14a. Describe as...Ch. 12 - Prob. 1CM
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- What is the mechanism of action of the antimicrobial used to treat patients with Fungal infections * a. Inhibits ergosterol synthesis b. Inhibits glucan synthesis c. Inhibits protein synthesis d. Inhibits nucleic acid synthesisarrow_forwardwhat is the mechanism of action for penicillins? a. injury to plasma membrane b. inbibition of protein synthesis c. inhibition of cell wall synhesis d. inhibition of nucleic acid synthesis e. none of the above describes the mechanism of action for penicillinsarrow_forwardUV light is able to damage bacterial cells by:a. preventing mitosis b. damaging DNA c. dissolving cell membranes d. coagulating cytoplasmarrow_forward
- Many viruses enter host cells through receptor-mediated endocytosis, What is an advantage of this entry strategy? A. The virus directly enters the cytoplasm of the cell B The virus only enters its target host cell type. C. The virus is protected from recognition by white blood cells. D. The virus can directly inject its genome into the cell's nucleus.arrow_forwardWhich of the following BEST describes an agent that is bacteriostatic? A) It suspends bacterial synthesis of Tranexamic Acid. B) It kills the bacteria by destroying its cell wall. C) It zaps the bacteria with static electricity. D) It suspends bacterial growth.arrow_forwarda. If you were involved in developing an antiviral drug, what wouldbe some important considerations? (Can a drug “kill” a virus?)b. How could multiplication be blocked?arrow_forward
- Substances that are naturally produced by certain microorganisms that can either inhibit or destroy other microorganisms are called: a)semisynthetic drugs b) narrow-spectrum drugs c) antibiotics d) synthetic drugsarrow_forwardWhy are encapsolated bacteria generally more pathogenic than un-capsolated strains. a. Because capsule allows the organism to hide in the body of the host. b. because the capsule causes the phagocyte to mutate c. because the capsule protects bacteria from host immune cells d. because the capsule kills the phagocytes e. because the capsule stimulates a potent immune response in the host.arrow_forwardDoctors prescribe synergistic drug combinations to treatbacterial infections. The purpose of such treatment is to:(a) Change the bacteria with cell walls to L forms lackingcell walls(b) Reduce the treatment time of the disease(c) Prevent microorganisms from acquiring drug resis-tance(d) Reduce the toxic side effects of the antibiotics(e) Use lower doses of antibioticsarrow_forward
- Choose the combination of answers that most accurately completes the statement.Which of the following modes of action would be most selectively toxic? a. interrupting ribosomal function b. dissolving the cell membrane c. preventing cell wall synthesis d. inhibiting DNA replicationarrow_forwardAn antiviral drug that is a guianine analog would have an antiviral mode of action that: a) blocks penetration b) blocks DNA replication c) inhibits peptidoglycan cross linking d) blocks maturation e) bonds to ergosterol in the cell membranearrow_forwardWhat kind of drug might be made out of an antimicrobial peptide and describe an advantage it would have over a drug like penicillin?arrow_forward
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