In Order to Elucidate the Calvin Cycle, Calvin and His

question 73

Multiple Choice

In order to elucidate the Calvin cycle, Calvin and his colleagues used two-dimensional paper chromatography to analyze the presence of different molecules under different conditions. What did they conclude from the accumulation of RuBP when CO₂levels were low?

• A) RuBP only reacts with CO₂in the sunlight.
• B) RuBP only reacts with CO₂when concentrations of ATP are low.
• C) RuBP is the first substrate to react with CO_2.
• D) RuBP is the last substrate to react in the Calvin cycle.
• E) CO₂serves as a non-competitive inhibitor of rubisco.

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Definitions:

Operant Conditioning

A method of learning that employs rewards and punishments for behavior, where an association is made between a behavior and a consequence for that behavior.

Observational Learning

A learning process where individuals change their behaviors or acquire new information by watching the actions of others.

Classical Conditioning

The learning method that occurs through repeated pairings of two stimuli, resulting in a response that at first is triggered by the second stimulus but in time is triggered by the first stimulus.

Operant Conditioning

The act of learning in which the intensity of a behavior is transformed by the application of rewards or punishments.