EXAM 2025/2026 WITH ACTUAL CORRECT
QUESTIONS AND VERIFIED DETAILED
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what are two ways motility can be determined?
wet mount or motility media
proteins found one flagella, different in different kinds of bacteria
serovars
what strand of E. coli causes food poisoning?
E. coli O157:H7
found on spirochete, similar to flagella in structure, but it is wrapped around the bacteria
axial filaments
What bacteria causes syphilis?
Treponema pallidum
What bacteria causes Lyme disease?
Borrelia burgdorferi
smaller than flagella, found mainly in gram-negative cells
fimbriae
What bacteria causes whooping cough?
Bordetella pertussis
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, longer than fimbriae and allow prokaryotes to exchange DNA
Pili
what two bacteria have pili?
pseudomanas and E. coli
almost all prokaryotes have a...
cell wall
what are the functions of the prokaryotic cell wall?
prevents lysis, helps to maintain shape, contributes to disease
what three eukaryotic cells have a cell wall?
plants, fungi, algae
what is the cell wall made of?
peptioglycan
what is peptidoglycan made of?
peptides and sugar
Peptidoglycan contains two sugars. They are...
NAG and NAM
what antibiotic interferes with the cross-bridges of NAG and NAM and causes the cell wall to
lyse?
penicillin
a gram positive cell wall makes up _______% of the overall cell weight
25
what charge does a gram positive cell wall have?
negative
why does a gram positive cell wall have a negative charge?
Teichoic acid
one of the most deadly and dangerous pathogens
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