An organism that can use gaseous oxygen in metabolism and has the enzymes to process toxic oxygen products is a(n)
A. obligate aerobe.
B. aerobe.
C. facultative anaerobe.
D. obligate anaerobe.
E. microaerophile.
Answer: B
Biology & Microbiology
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While the maximum number of electrons required to fill the outermost shell of an atom varies depending on the size of the atom, almost all of the smaller atoms (atomic numbers 2-20) are considered stable, and thus nonreactive, when they contain ________ electron(s) in the outermost shell.
A. 1 B. 8 C. 16 D. 2
Biology & Microbiology
Energy is defined as
A. heat. B. the capacity to do work. C. change. D. movement.
Biology & Microbiology
Which type of muscle tissue is voluntary?
1.cardiac 2.skeletal 3.smooth 4.all of these
Biology & Microbiology
Select all of the examples of cytokines, the signaling molecules produced by T lymphocytes, macrophages, and other cells.
Biology & Microbiology