FREE BIOLOGY AND STUDY GAMES ABOUT

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FREE BIOLOGY AND STUDY GAMES ABOUT

MICROBIOLOGY #2 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -381 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Streptococcus pyogenes "group A" can cause ______

Answer:

strep throat or necrotizing fascitis

Question 2: lysis of bacteria produces ______

Answer:

plaques

Question 3: Bacterial inoculum intoduced into nutrients called ____

Answer:

media

Question 4: flexible spiral shaped prokaryotes are ______

Answer:

spirochetes

Question 5: Archaea are classified into phyla based primarily ______ sequences

Answer:

rRNA

Question 6: membrane fushion is done by?

Answer:

enveloped viruses

Question 7: chromosomes split, move towards poles

Answer:

Anaphase (meiosis)

Question 8: component of coenzyme A

Answer:

Pantothenic acid (vitamin B5) for growth factors Question 9: Mannitol Salt Agar (MSA) has a high salt content, which represses the growth of bacteria other than _______

Answer:

Staphylococci

Question 10: medium in which the exact chemical composition is known

Answer:

defined media

Question 11: side effects of administration of antimicrobial drugs

Answer:

toxicity, allergies, disruption of normal microbiota Question 12: the interplay between drugs that results in efficacy that exceeds the efficacy of either drug alone

Answer:

Synergism

Question 13: a student observes a researcher streaking a plate numerous times, flaming the loop between streaks. The researcher is likely using the ______ method to isolate microorganisms

Answer:

streak plate Question 14: ________ contains 1 molecule of mercury, and is used to preserve vaccines

Answer:

Thimerosal Question 15: bacterial lawn exposed to dics impregnated with antimicrobial agents, the larger the zone of inhibition the more effective

Answer:

kirby-bauer disk diffusion

Question 16: how are viruses cultured?

Answer:

media consisting of mature organisms, embryonated eggs, cell cultures

Question 17: what virus is common culture in chicken eggs?

Answer:

the influenza vaccine

Question 18: disease causing proteins, contain ?-pleated sheets

Answer:

prion PrP

Question 19: what class of surfactants is most soluble in water?

Answer:

quaternary ammonium compounds

Question 20: electronic counters for measuring microbial reproduction

Answer:

flow cytometry, coulter counter

Question 21: the endospores of which organism are used as a biological indicator of sterilzation

Answer:

bacillus stearothermophilus

Question 22: enveloped viruses are often released by ________

Answer:

budding

Question 23: modern prokaryotic classification is based on?

Answer:

genetic relatedness of rRNA sequences Question 24: rhizobium, rickettsia & brucella are all categorized as what gram-negative bacteria

Answer:

alphaproteobacteria Question 25: Proteins that traverse the inner and outer membrane - remove antibiotic from the cell

Answer:

Genes encoded on plasmids Question 26: iodine tablets, iodophores, chlorine treatment, bleach, the addition of fluoride to water & toothpaste, are all examples of what

Answer:

halogens

Question 27: can contaminate milk, causes miscarriges, cause brucellosis

Answer:

Brucella

Question 28: what reproduces mostly through meiosis

Answer:

fungi