Question

question 7 (1 point) in a c3 plant, carbon dioxide entering the calvin cycle binds with: a) oxaloacetic acid b) rubp c) pep d) g3p e) nadph

Explanation:

In C3 plants, the first step of the Calvin - cycle is carbon - fixation. Carbon dioxide combines with ribulose - 1,5 - bisphosphate (RuBP) in a reaction catalyzed by the enzyme Rubisco. Oxaloacetic acid is involved in the C4 pathway. PEP is the primary CO₂ - acceptor in C4 plants. G3P is a product of the Calvin - cycle. NADPH is an energy - carrying molecule used in the Calvin - cycle but not the molecule that CO₂ binds to.

Answer:

B. RuBP