The cell diagrammed below provides an overview of some regulation of the Calvin cycle. Which of the following is NOT involved in this regulation?
A) Several different transport mechanisms are used for $ \mathrm{CO}_{2} $ and $ \mathrm{HCO}_{3}- $.
B) $ \mathrm{CO}_{2} $ and $ \mathrm{HCO}_{3}^{-} $are sequestered inside a carboxysome.
C) Rubisco is sequestered inside a carboxysome.
D) Carbonic anhydrase is used to convert $ \mathrm{CO}_{2} $ to $ \mathrm{HCO}_{3}^{-}{ }^{-} $and thus trap it.
E) Proteins are used to block light and thus the light reactions.

Question

The cell diagrammed below provides an overview of some regulation of the Calvin cycle. Which of the following is NOT involved in this regulation? 
A) Several different transport mechanisms are used for $ \mathrm{CO}_{2} $ and $ \mathrm{HCO}_{3}- $. 
B) $ \mathrm{CO}_{2} $ and $ \mathrm{HCO}_{3}^{-} $are sequestered inside a carboxysome. 
C) Rubisco is sequestered inside a carboxysome. 
D) Carbonic anhydrase is used to convert $ \mathrm{CO}_{2} $ to $ \mathrm{HCO}_{3}^{-}{ }^{-} $and thus trap it. 
E) Proteins are used to block light and thus the light reactions.

Quizplus · Accepted Answer

The diagram shows a regulatory mechanism that involves blocking light and thus the light reactions to control the Calvin cycle. Therefore, choice E is not involved in this regulation. Choices A, B, C, and D are all involved in regulating the availability of CO2/HCO3- for the Calvin cycle.

The Cell Diagrammed Below Provides an Overview of Some Regulation CO2 \mathrm{CO}_{2} CO2​

The Cell Diagrammed Below Provides an Overview of Some Regulation $\mathrm{CO}_{2}$