The processes listed below represent major chemical pathways in
photosynthesis. Respond to statements 80–84 with reference to
these five processes.
a. light-dependent reactions
b. chemosynthetic reactions
c. carbon dioxide fixation
d. Calvin-Benson cycle
e. C4 pathway
D 80. This leads to the formation of a glucose-6-phosphate
from two molecules of phosphoglyceraldehyde.
M 81. In this process carbon dioxide is incorporated first
into an unstable intermediate compound and then
into phosphoglycerate.
E 82. This yields NADPH as well as ATP.
M 83. This is a carbon-fixing system that precedes the
Calvin-Benson cycle in some plants.
M 84. PGAL molecules are formed from the reaction of
PGA molecules with ATP and NADPH in this
pathway.
Answers: 80. d, 81. c, 82. a, 83. e, 84. d
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