Question

To identify the molecule that accepts CO2, Calvin and Benson manipulated the carbon-fixation cycle by either cutting off CO2 or cutting off light from cultures of photosynthetic algae. They then measured the concentrations of various metabolites immediately following the manipulation. How would these experiments help identify the CO2 acceptor?

Answer 1

Answer:

The CO2 acceptor concentration would increase when the CO2 is cut off, but decrease when the light is cut off.

Explanation:

Calvin's light-independent reactions cycle breaks down on three basic stages: fixation, reduction, and regeneration.

All organisms need energy to perform life functions, and energy that is released is reused in other ways. Some plants have evolved mechanisms to increase the CO2 concentration in their leaves under hot and dry conditions.