Where is carbon fixed?

Question

Carbon is fixed in the:

a. light reactions

b. Calvin cycle

c. citric acid cycle

d. glycolysis

e. pentose phosphate pathway

Answer 1

B. Calvin Cycle: AKA the "dark reaction" uses the energy from photosynthesis to convert carbon dioxide and water into organic compounds.

a. Light Reactions: the initial stage of photosynthesis. Leads into the Calvin Cycle.

c. Citric Acid Cycle:Breaks down the products of glycolysyis and releases carbon.

d.  Converts glucose to pyruvate, which then goes into the Citric Acid Cycle.

E. Pentose Phosphate Pathway: Breaks down 5 carbon sugars (pentoses) to produce NADPH.

Answer 2

By enzymes of the Calvin Cycle in the stroma of chloroplasts.

"b" - answer.