MICROBIOLOGY PRE-TEST EXAM QUESTIONS

PDF Download

MICROBIOLOGY PRE-TEST EXAM QUESTIONS

Actual Qs and Ans - Expert-Verified Explanation -Guaranteed passing score -40 Questions and Answers

-Format: Multiple-choice / Flashcard

Question 1: The greatest number of pathogens that cause life-threatening illness enter the body through the

Answer:

respiratory system

Question 2: Endospores are

Answer:

ALL CHOICES ARE CORRECT..... metabolically inactive, resistant to heat and chemical destruction, resistant to destruction by radiator, living structures Question 3: The term ___ is given to any foreign substance that stimulates a specific immune system response.

Answer:

antigen Question 4: Antimicrobials effective against a wide variety of microbial types are termed

Answer:

broad-spectrum drugs

Question 5: Koch's postulates are criteria used to establish that

Answer:

a specific microbe is the cause of a specific disease

Question 6: Peptidoglyan is a unique macromolecule found in bacterial

Answer:

cell walls Question 7: Substances that are naturally produced by certain microorganisms that can inhibit or destroy bacteria are called

Answer:

antibiotics

Question 8: A chain of rod-shaped cells would be called a

Answer:

streptobacillus

Question 9: All communicable diseases

Answer:

are caused by microorganisms or their products

Question 10: Gram-negative organisms

Answer:

have a more complex cell wall Question 11: E. coli bacteria that normally live in the human large intestines and produce vitamin K that the body uses would be best termed a ____ relationship.

Answer:

mutualistic

Question 12: Disease-causing microorganisms are called

Answer:

pathogens

Question 13: All of the following are routinely collected for microbial analysis except:

Answer:

hair Question 14: The outcome of the Gram stain is based on differences in the cell's

Answer:

cell wall Question 15: Pathogenic microbes, that cause disease in healthy people are called

Answer:

true pathogens Question 16: This body region is protected by fatty acids, acidic pH, lactic acid, and a tough cell

barrier with its own normal biota:

Answer:

skin Question 17: There are fewer antifungal, anti-protozoan, an anti-helminthic drugs compared to antibacterial drugs because fungi, protozoa, and parasitic worms

Answer:

are so similar to human cells that drug selective toxicity is difficult to achieve

Question 18: The term infection refers to

Answer:

pathogens penetrating host defenses

Question 19: Surfactants work by

Answer:

disrupting membrane integrity

Question 20: The causes of bacterial resistance to antibiotics include

Answer:

ALL CHOICES ARE CORRECT...... chromosomal mutations, prevention of drug entry into the cell, and alternations of drug receptors on cell targets

Question 21: The use of chemical agents directly on exposed body surfaces to destroy or inhibit

vegetative pathogens is:

Answer:

antisepsis Question 22: The study of the frequency and distribution of a disease in a defined population is

Answer:

Epidemiology Question 23: Diagnosis of viral infections sometimes involves analyzing the patient's blood for specific ____ that the immune system produces against the virus.

Answer:

antibodies Question 24: Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms?

Answer:

lack cell structure

Question 25: Amoebic dysentery is most commonly contracted through

Answer:

fecal-oral route from contaminated food or water

Question 26: The number one worldwide infectious diseases are

Answer:

respiratory diseases

Question 27: Mammalian viruses capable of starting tumors are

Answer:

oncoviruses

Question 28: Microbial resistance resulting from mutation occurs because

Answer:

ALL CHOICE ARE CORRECT........ prokaryotic genomes undergo mutation rapidly, prokaryotic genomes undergo mutation often, short generation times accumulate mutations in populations, mutations are passed between organisms