The black bread mold Rhizopus stolonifer and dung-infesting fungi of the genus Pilobolus are members of which fungal phylum?
a. Glomeromycota
b. Basidiomycota
c. Chytridiomycota
d. Zygomycota
e. Ascomycota
ANSWER: d
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The chemical digestion of proteins begins in the _____
A) mouth B) stomach C) small intestine D) bloodstream
Mangrove plants live in areas regularly flooded with salt water. Which of these is not a possible mechanism for controlling their salt balance?
A. The roots block salt uptake. B. The succulent leaves contain large quantities of water that dilute salt that is absorbed. C. Absorbed salt is secreted from special salt glands. D. Modified roots emerge above the water level and help oxygen diffuse into the roots. E. Excess salt is stored in special tissues.
Receptor mediated endocytosis
A. involves formation of caveolae that are enriched in cholesterol and caveolin. B. depends on formation of clathrin coated pits that pinch off. C. depends on formation of clathrin coated pits that pinch off and is used to internalize molecules such as hormones, growth factors, iron, and cholesterol. D. is used to internalize molecules such as hormones, growth factors, iron, and cholesterol. E. is typically used to internalize plasma membranes added by exocytosis.
Which cells secrete mucus?
A) type II alveolar cells B) ciliated cells C) alveolar macrophages D) type I alveolar cells E) goblet cells