Microbiology 250 Final Exam Latest Update 2025-2026 100 Questions and 100% Verified Correct Answers Guaranteed A+
a cell wall component found only in gram positive bacteria is - CORRECT ANSWER:
teichoic acid
a common gut bacteria is - CORRECT ANSWER: echerichia coli
a good way of avoiding infection with salmonella typhridium is to - CORRECT
ANSWER: properly prepare and store foods
a good way to prevent transmission of stphyloccus aureus is - CORRECT ANSWER:
washing hands
a mixed infection occurs when - CORRECT ANSWER: two or more organisms are
involved in the infection
a molecule that mediates inflammation is - CORRECT ANSWER: histamine
a thin, spiral shaped bacterium is called - CORRECT ANSWER: a spirochete
A vaccine: - CORRECT ANSWER: completes the afferent branch of the immune response
allergy occurs when - CORRECT ANSWER: your immune response damages your
tissue s part of its normal operation
an example of natural passive immunity is - CORRECT ANSWER: ingestion of
colostrum (early breast milk) 1 / 2
an intestinal parasite often associated with cats and fetal damage in humans is -
CORRECT ANSWER: toxoplasma gondii
an outer membrane component only found in gram negative bacteria is - CORRECT
ANSWER: lipopolysaccharide
antibodies are produced by - CORRECT ANSWER: bone marrow derived lymphocytes
antibodies that bind to polymerases and gyrases - CORRECT ANSWER: disrupt nucleic acid synthesis
antibody covering viral receptor molecules is called - CORRECT ANSWER:
neutralization
antibody enhanced phagocytes is called - CORRECT ANSWER: opsonization
at body temperature (98.6F or 37 C) many pathogenic fungi are often - CORRECT
ANSWER: yeasts
autumnal fever( leptospirosis) is caused by - CORRECT ANSWER: leptospira
interrogans
bacterial transformation is - CORRECT ANSWER: the uptake of naked DNA
cells that process and deliver immunogens to t cells and b cells are - CORRECT
ANSWER: polymorphonuclear cells
cells which can initiate the inflammatory response are - CORRECT ANSWER: mast
cells
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