A mycelium is a mass of what structures?
a. thallus
b. hyphae
c. peptidoglycans
d. pellicles
b. hyphae
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If you forgot to heat fix a smear before doing a Gram stain, which of the following might occur?
A. Gram-positive and Gram-negative bacteria would both stain purple. B. The stains would not adhere to the bacteria. C. The decolorization step of the Gram stain would not work properly. D. The smear may not adhere to the slide.
Which of the following does not indicate microbe involvement in energy and nutrient flow?
A. Formation of greenhouse gases, CO2 and methane
B. Thermal hot springs warmed by heat from earth's interior
C. Decomposition of dead matter and wastes
D. Digestion of complex carbohydrates in animal diets
Which of the following contributes to the pathogenesis of Cryptococcus neoformans?
A) the ability to produce hyphae which penetrate tissues B) the production of leukocidins C) the production of mucinase D) the ability to resist killing after phagocytosis E) the production of melanin and the presence of a phagocyte-resistant capsule
Alcohol reduces ADH secretion which in turn does which of the following?
What will be an ideal response?