Chloroplasts transform ________ energy into the ________ energy of ATP
A) light; chemical
B) heat; chemical
C) light; heat
D) heat; light
E) chemical; heat
Answer: A
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Based upon the comparisons of anoxygenic and oxygenic photosythesis, the entry of oxygen into the atmosphere is most directly attributed to
A) photosystem I. B) the Calvin cycle. C) photoreactivation. D) photosystem II. E) bacteriorhodopsin.
A unit of DNA that directs the building of a protein is the ____
a. genotype b. phenotype c. locus d. gene e. chromosome
A transgene is a
A) hybrid gene. B) gene that contains no introns. C) bacterial gene that is found in mammalian cells. D) human gene of viral origin. E) gene introduced into an organism by artificial means.
Lungs first evolved in which group?
a. cartilaginous fishes b. bony fishes c. lampreys d. coelacanths e. lungfishes