Question

36. In the Calvin cycle, where plants use the energy from photosynthesis to synthesize glucose, what enzyme is need for carbon fixation?
a. Rubisco
b. Crisco
c. Formaldehyde
d. Lactase

Answer 1

Answer: a. Rubisco

Explanation:

Photosynthesis is a way of making organic molecules from carbon dioxide (CO2). To build organic molecules, cells use raw materials provided by the light reactions. 1,5-bisphosphate carboxylase, also known as Rubisco, is the enzyme needed for carbon fixation during the Calvin cycle. This enzyme is found in the stromal space of the chloroplast. It acts by adding CO2 to the 5-carbon sugar ribulose 1,5-bisphosphate forming 2 molecules of 3-phosphoglycerate.