A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n)
A) obligate aerobe.
B) facultative anaerobe.
C) aerotolerant anaerobe.
D) microaerophile.
E) obligate anaerobe.
E
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If ____ mutation(s) occur(s) in snails, the direction of coiling may reverse, which ____ mating
a. 1; encourages b. 1; prohibits c. 2; encourages d. 2; prohibits e. 3; encourages
Based on this graph of vascular plant species on a volcanic island, at what point would you hypothesize that sea gulls began nesting on the island?
1.1998
2.1973
3.1965
4.1986
During fermentation, ________ is recycled by transferring its electrons to a molecule other than oxygen.
Fill in the blank(s) with the appropriate word(s).
What connects the cytoplasm of adjacent cells in plants?
a. the plasma membrane b. plasmodesmata c. the primary cell wall d. the secondary cell wall