Specific dynamic action is the amount of energy required
A. to maintain normal body functions at rest.
B. for voluntary muscular movements.
C. to digest and assimilate food.
D. by all normal body functions and activities.
C. to digest and assimilate food.
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In order to use the energy stored in sugars, what must the cells must first transfer it to? How does the energy transfer occur?
What will be an ideal response?
Ancestors of the Galàpagos finches had two different types of seeds to eat on some islands. Some seeds were very small, and required small beaks to handle, other seeds were very large and required large strong beaks to crack. This led to among the Galàpagos finches.
A. disruptive selection B. stabilizing selection C. directional selection D. sexual selection E. artificial selection
According to the theory of endosymbiosis, the origin of chloroplasts probably involved:
A) the formation of colonies of cyanobacteria. B) the formation of cell walls around the photosynthetic pigments. C) engulfing of small photosynthetic prokaryotes by a larger cell. D) the accumulation of free oxygen in ocean waters. E) infolding of the cell membrane around circular pieces of DNA in the cytoplasm.