Photoautotrophs use light energy directly for
A. the reduction of carbon dioxide to glucose.
B. the production of ATP and NADPH.
C. both the production of ATP and NADPH and the reduction of carbon dioxide to glucose.
D. neither the production of ATP and NADPH nor the reduction of carbon dioxide to glucose.
Answer: B
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Genetic variation has two sources: ____ and
Fill in the blank with the appropriate word.
Overgrowth of the skin bacterium Proprionibacterium acnes may lead to ________.
A. rash B. warts C. bloodstream infection D. body odor
Fibrous proteins have extensive ________ structure, which allows them to be highly ordered and repetitive.
A) primary B) secondary C) tertiary D) quaternary E) multiprotein complex
Natural selection would have selected for those protocells and cells that were more able to use the energy available in their environment to allow growth and replication.
a. true b. false