MCB 2610 Lab final (Questions & Answers) Rated 100%
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Course
MCB 2610 Lab
Institution
MCB 2610 Lab
Differential media - allow certain bacteria to be differentiated from others by change of color,
zone of clearing, or other
Bacteria can prevent phage attachment and escape infection by acquiring mutations on genes which
alter their _________. - cell surface receptors
A _______ agent does not k...
MCB 2610 Lab final
Differential media - allow certain bacteria to be differentiated from others by change of color,
zone of clearing, or other
Bacteria can prevent phage attachment and escape infection by acquiring mutations on genes which
alter their _________. - cell surface receptors
A _______ agent does not kill a microorganism, but rather just inhibits its growth. - bacteriostatic
A clear area surrounded by growth of host cells is called a _______. - plaque
A color change to yellow on the mannitol salt agar plate indicates what possible organism? - S.
aureus
Absorbance - the change in optical density
Aerobes - require oxygen
After a Gram negative test, bacteria are separated by: - oxidase test
After a Gram positive test, bacteria are separated by: - cell morphology
Alpha hemolysis - green cloudy zone around growth, normal
Amylase - catalyzes starch hydrolysis
, An antibiotic that is effective against a wide variety of pathogenic microorganisms is called a _________
antibiotic. - broad spectrum
Anaerobes - don't need oxygen
Antibiosis - inhibitory effect of antibiotics
Antibiotic - antimicrobial substance produced by a microorganism
Antimicrobial - inhibits growth or kills microorganism
Antiseptics - used on living tissues
Bacteria grow best in _______ ______. - moist areas
Bactericidal - kills organisms
Bacteriophage or phage - virus that infects bacteria
Beta hemolysis - clear zone around growth, pathogenic
Brownian motion - random collisions with water molecules
Caseinase - hydrolyze casein into peptides
Catalase - protects cells from hydrogen peroxide
Coliforms are a subgroup of enteric bacteria classified by their ability to ferment which sugar? -
lactose
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