Which microscope would be used to view cell structures within ultrathin sections of cells?
A. Lightmicroscopes (Can be any)
B. Scanning electron microscope
C. Transmission electron microscope
Answer: C. Transmission electron microscope
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Blastomyces dermatitidis causes ________.
A. blastomycosis B. cryptococcosis C. San Joaquin fever D. valley fever
Which relationship is MOST likely to be observed between species of different classes?
A) A deltaproteobacterium oxidizes hydrogen sulfide into sulfate, which is then reduced by an epsilonproteobacterium. B) An epsilonbacterium oxidizes the hydrogen sulfide produced by a sulfur-reducing deltaproteobacterium. C) A sulfate-reducing epsilonbacterium produces sulfite, which a deltaproteobacterium reduces to hydrogen sulfide. D) Syntrophic metabolism of sulfur by a deltaproteobacterium and an epsilonproteobacterium occurs.
Predict what would happen to a sponge that could no longer produce spicules.
A. Intracellular digestion would cease. B. Water circulation would be greatly impeded. C. Gametes could no longer be produced. D. Vulnerability to predation would increase.
Old World monkeys have a prehensile tail and a flattened nose.
Answer the following statement true (T) or false (F)