All of the following are associated with nucleic acid structure EXCEPT
A) ribose.
B) hydrogen bonds.
C) uracil.
D) ionic bonds.
E) phosphate.
D
Biology & Microbiology
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What type of enzyme regulation is illustrated here?
a. allosteric inhibition
b. allosteric activation
c. feedback inhibition
d. dehydration inhibition
Biology & Microbiology
The most common limit to plant growth is a lack of
a. phosphorous. b. carbon. c. hydrogen. d. oxygen. e. nitrogen.
Biology & Microbiology
The most economically important bryophyte is:
a. Equisetum. b. Anthoceros. c. Psilotum. d. Sphagnum. e. Lycopodium
Biology & Microbiology
The traditional class Reptilia is ____ because it does not include all descendants of the most recent common ancestor
of reptiles. a. monophyletic b. paraphyletic c. polyphyletic d. sister taxa e. cladistic
Biology & Microbiology