Unusual cellular extensions called prosthecae are associated with which of the following groups of proteobacteria?
A) alphaproteobacteria
B) betaproteobacteria
C) gammaproteobacteria
D) deltaproteobacteria
E) epsilonproteobacteria
A
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Which source of energy powers the light-independent reactions of photosynthesis?
a. light b. ATP and NADPH c. photosystem 2 d. glucose e. NADP+
Hydrogen bonding is most important in stabilizing the ________ structure of many proteins
A) primary B) secondary C) tertiary D) quaternary E) primary, secondary, tertiary, and quaternary
Small Aristelliger lizards have difficulty defending territories, but large lizards are more likely to be preyed upon by owls. Which kind of selection acts on the adult body size of these lizards?
A. Stabilizing selection B. Directional selection C. Disruptive selection
The science that names and groups organisms is
A. phylogeny. B. Linnaeus. C. taxonomy. D. anatomy.