The Calvin cycle requires all of the following except
A. carbon dioxide.
B. water.
C. NADPH.
D. ATP.
E. oxygen.
Answer: E
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The reaction phosphoenolpyruvate + ADP ? pyruvate + ATP (? G = -7.5 kcal/mole)
A. is not spontaneous. B. involves the transfer of a phosphate to phosphoenolpyruvate. C. involves the transfer of energy from ATP to phosphoenolpyruvate. D. is an endergonic reaction. E. is an exergonic reaction.
The ____ are the initial branches of the trachea that lead into each lung
a. bronchioles b. alveoli c. pleura
d. bronchi e. larynx
Oxidation-Reduction Reactions
What will be an ideal response?
Some nerves are myelinated, and others are not. Myelinated nerves send signals faster than unmyelinated neurons. Draw two neurons of equal length, and wrap segments of myelin along one. Be careful to leave spaces for the nodes of Ranvier. Now, measure
the exposed axons of each, and total up the distance. Describe why the myelinated neurons send signals faster. What will be an ideal response?