In an estuary, the zone of maximum vertical difference in density is called a(n) ________
Fill in the blank(s) with correct word
pycnocline
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The toxin implicated in C. perfringens toxicity is
A. tetanospasmin. B. exoenzyme S. C. alpha-toxin. D. endoenzyme T.
Each of the following molecules is an electron carrier in the electron transport system except
A) flavoproteins. B) iron-containing cytochromes. C) iron-sulfur proteins. D) coenzyme Q. E) All of the above are electron carriers.
When electrons flow through the electron transport system from NADH to oxygen, what is the sequence of molecules through which they move?
A) complex I, cytochrome c, complex III, coenzyme Q, complex IV, O2 B) complex I, coenzyme Q, complex III, complex IV, O2 C) complex I, coenzyme Q, complex IV, cytochrome c, O2 D) complex I, coenzyme Q, complex III, cytochrome c, complex IV, O2 E) complex II, coenzyme Q, complex III, complex IV, O2
The main function of bacterial endospores is:
A. Protection of bacteria against phagocytosis B. Survival against environmental dangers C. Induction of antibiotic resistance D. Recognition of specific receptors on target cells E. Reproduction