Mycorrhizae, present for most plant species, generally do not help roots with the uptake of ____
a. water
b. nitrogen
c. phosphate
d. carbon
e. sugars
ANSWER: d
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The ATP synthase complex in the thylakoid membrane
A) contains an embedded CF1 component and a protruding CFo component. B) is identical to the FoF1 complex of mitochondria. C) performs photophosphorylation in oxygenic phototrophs. D) contains an assembly of hydrophobic polypeptides that function in ATP synthesis. E) all of the above
If similarities between two structures in different organisms reflect independent evolution, these structures are
A. analogous. B. vestigial. C. homeotic. D. homologous. E. heterologous.
In the figure above, ____ is responsible for producing cells needed to defend the body
a. tissue C b. tissue D c. tissue E d. tissue F e. tissue G
Which of the following describes how facilitated diffusion is powered?
a. ATP is required directly. b. Facilitated diffusion is "free of cost." c. Facilitated diffusion is powered by endocytosis. d. The sodium-potassium pump powers facilitated diffusion. e. Energy is required to do the work of establishing and maintaining a concentration gradient.