The electrons for photosynthesis come from ____
a. ATP
b. glucose
c. NADP+
d. chlorophyll a
e. H2O
ANSWER: e
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Soils are composed mostly of which of the following?
A. layers of many decaying elements B. fertilizers and other organic materials C. horse and cow manure D. layers of material mostly from rocks E. inorganic minerals and organic materials
Phototropism is a plant response controlled largely by which color of light?
A. Red. B. Blue. C. Violet. D. Green. E. None of the choices is correct.
Cloned genes can be used to
1.study gene function. 2.produce a large amount of a particular gene for study. 3.produce proteins in quantity. 4.introduce known mutations to study gene function. 5.All of the options are correct.
The eardrum is directly connected to the ____
a. cochlea b. malleus c. tympanic membrane d. round window e. stapes