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AAB MT Microbiology Questions and answers from the AAB PER Q&A Book

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What term describes the morphology of organisms that vary in shape and size? -:- Pleomorphic Capsules are the basis of which test? -:- Serotyping A mucoid colony on blood agar medium indicates that which of the following characteristics may be present? -:- Organism has a capsule. What ar...

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  • September 3, 2024
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  • 2024/2025
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  • AAB MT
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2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!



AAB MT Microbiology Questions and answers
from the AAB PER Q&A Book.
What term describes the morphology of organisms that vary in shape and size?


✓ -:- Pleomorphic




Capsules are the basis of which test?


✓ -:- Serotyping




A mucoid colony on blood agar medium indicates that which of the following

characteristics may be present?


✓ -:- Organism has a capsule.




What are dark staining granules called?


✓ -:- Metachromatic




Which of the following organisms are non-motile?


✓ -:- Shigella and Klebsiella




In the bacterial growth cycle, growth ceases because nutrients are exhausted or toxic

metabolic products have accumulated in which phase?

1|Page | Grade A+| 2024/2025

,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

✓ -:- Stationary phase




Which of the following genera of bacteria form spores?


✓ -:- Bacillus and Clostridium




What term is used to describe bacteria that grow in the absence of atmospheric oxygen and

obtain oxygen from oxygen-containing compounds?


✓ -:- Anaerobes




What is the temperature at which bacteria grow best known as?


✓ -:- Optimum




On blood agar plates a small zone of alpha hemolysis surrounded by a zone of beta

hemolysis after refrigeration is known as what type of hemolysis?


✓ -:- Alpha-prime hemolysis




What is the most effective method of sterilization?


✓ -:- Autoclaving




Which of the following is used for quality control for the dry heat oven?


2|Page | Grade A+| 2024/2025

,2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

✓ -:- Bacillus subtilis




Media that cannot be heated can be sterilized by what alternate method?


✓ -:- Filtration




Which one of the following disinfectants is the most effective germicide against bacteria,

spores, tubercle bacilli, fungi, and viruses?


✓ -:- Chlorine




What is a term that describes a process or treatment that renders a medical device,

instrument, or environmental surface safe to handle?


✓ -:- Decontamination




What color do gram-positive bacteria stain?


✓ -:- Purple




Acid-fast bacteria appear what color microscopically?


✓ -:- Red




Acid-fast organisms in tissue are best stained by which of the following methods?


3|Page | Grade A+| 2024/2025

, 2024 /2025 | © copyright | This work may not be copied for profit gain | Excel!

✓ -:- Kinyoun




Which of the following should be used to remove antimicrobials before culturing?


✓ -:- Antimicrobial removal device




Which statement concerning sodium polyanethol sulfonate (SPS) is NOT true?


✓ -:- Activates some antimicrobials




What are some functions of sodium polyanethol sulfonate (SPS)?


✓ -:- Prevents blood from clotting, prevents phagocytosis, and neutralizes the

bactericidal effect of human serum.




What is the most abundant normal flora in throat cultures?


✓ -:- Alpha-hemolytic streptococci




Why is it recommended to stab the blood agar plate when setting up throat cultures?


✓ -:- Some streptococci may not produce beta hemolysis under aerobic conditions.




What is the most common pathogen is throat cultures?




4|Page | Grade A+| 2024/2025

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