How do proteins contribute to the function of an electron transport chain?
A. They become oxidized and reduced.
B. They undergo osmosis.
C. They are involved in the hydrolysis of electrons.
D. They consume electrons.
Ans: A. They become oxidized and reduced.
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A 59-year-old patient with cancer who was receiving high doses of chemotherapy developed a secondary lung infection that was identified as a fungus. The organism disseminated, which ul-timately was fatal to the patient. The organism isolated from sputum exhibited septate hyphae that were dichotomous. The organism is most likely which of the following?
a. Candida b. Cryptococcus c. Aspergillus d. Zygomycetes
Which of the following is a unique feature of viruses that separates them from bacteria?
A. They are generally smaller. B. They are often highly toxic. C. They lack proteins. D. They have different nucleotides in their hereditary material. E. They cannot exist outside of a host cell.
Radiolarians have characteristic ____, which are thin, ray-like strands of cytoplasm supported internally by bundles of
____.
a. axopods; microfilaments b. axopods; microtubules c. spicules; microfilaments d. spicules; microtubules
e. microfilaments; axopodsWhich of the following organisms is a prokaryote?
A) seaweed B) a slime mold C) an amoeba D) a bacterium