Exam (elaborations)
MT (AAB) Microbiology Questions and Answers 2024
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MT (AAB) Microbiology
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MT (AAB) MicrobiologyWhat term describes the morphology of organisms that vary in size and shape? -
answerPleomorphic
Capsules are the basis of which test? - answerserotyping
A mucoid colony on blood agar medium indicates that which of the following
characteristics may be present? - answerOrganism has a capsule
WHat are the dark staining granules called? - answermetachromatic
Which organisms are nonmotile? - answerShigella and Klebsiella
In the bacterial growth cycle, growth ceases because nutrients are exhausted or toxic
metabolic products have accumulated in which phase? - answerStationary phase
Which genera of bacteria form spores - answerBacillus and Clostridium
What term is used to describe bacteria that grow in the absence of atmospheric oxygen
and obtain oxygen from oxygen-containing compounds? - answeranaerobes
What is the temperature at which bacteria grow best known as? - answeroptimum
On blood agar plates small zone of alpha hemolyisis surrounded by a zone of beta
hemolysis after refrigeration is known as what type of hemolysis? - answeralpha-prime
What is the most effective method of sterilization? - answerautoclaving
Which of the following is used for QC in a dry heat oven? - answerBacillus subtilis
Media that cannot be heated can be sterilized by what alternate method? -
answerFiltration
Which one of the following disinfectants is the most effective germicide against bacteria,
spores, tubercle bacilli, fungi, and viruses? - answerChlorine
What is a term that describes a process or treatment that renders a medical device,
instrument, or enviromental surface safe to handle - answerdecontamination
What color do Gram-positive bacteria stain? - answerpurple
, Acid-fast bacteria appear what color microscopically? - answerred
Acid-fast organisms in tissue are best stained by which of the following methods? -
answerKinyoun
Which of the following should be used to remove antimicrobials before culturing? -
answerantimicrobial removal device
Which statement concerning sodium polyanethol sulfonate (SPS) is NOT true? -
answerActivates some antimicrobials
What is the most abundant normal flora in throat cultures? - answeralpha-hemolytic
streptococci
What is the most common pathogen in throat cultures? - answerStreptococcus
pyogenes
Why is it recommended to stab blood agar plate when setting up throat cultures? -
answerSome streptococci may not produce beta hemolysis under aerobic conditions
Nasopharyngeal swabs are recommended for the detection of which carriers? -
answerH.influenzae, N.meningitidis, B. pertussis
Why is the first morning urine specimen preferred for urine cultures? - answerSpecimen
is more concentrated
What indicates vaginal or urethral contamination of urine? - answer> 10 squamous
epi/hpf
How are smears of CSF prepared? - answercentrifuged CSF sediment
Smears of CSF are usually stained with which stain? - answerGram stain
Which of the following tests for bacterial antigen on cultures isolated from CSF is more
sensitive and faster? - answerLatex agglutination tests
Which of the following is not the cause of a venereal disease? - answerHaemophilus
aegyptius
A pos coagulase test is observed for which of the following? - answerclotting of plasma
What is the preferred method of differentiating S.aureus from S. epidermidis? -
answerCoagulase test
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