Exam 2 Calvin Cycle Flashcards
What is another name for the Calvin Cycle?
The Calvin Cycle is also known as the dark reactions, light-independent reactions, and the C3 pathway.
What is the primary function of the Calvin Cycle?
The Calvin Cycle involves carbon fixation, taking atmospheric CO₂ and transforming it into sugar.
What are the inputs of the Calvin Cycle?
The inputs of the Calvin Cycle are CO₂ from the atmosphere, ATP, and NADPH.
What role does ATP play in the Calvin Cycle?
ATP provides energy to make G3P.
What is the role of NADPH in the Calvin Cycle?
NADPH is the provider of high energy electrons to make G3P.
What happens in each turn of the Calvin Cycle?
The Calvin Cycle regenerates its starting material with each turn.
What is the first step of the Calvin Cycle?
The first step is carbon fixation, where a 5-C sugar RuBP is attached to CO₂ to make two 3-C molecules.
What enzyme is involved in the carbon fixation step?
The enzyme Rubisco is involved in the carbon fixation step.
What is the first step of the Calvin cycle?
Carbon fixation - A 5-C sugar RuBP is attached to CO₂ to make two 3-C molecules.
What inputs are required for the carbon fixation an reduction
step?
CO₂, Rubisco, and RuBP.
What is the second step of the Calvin cycle?
Reduction - Using energy from ATP & NADPH & enzymes, a 3-C sugar called G3P is formed.
What is the third step of the Calvin cycle?
Release of G3P - G3P leaves the cycle and will go on to form glucose.
What inputs are required for the release of G3P step?
Rubisco and 3-PGA.
What is G3P?
G3P (glyceraldehyde 3-phosphate) is a 3-C sugar formed during the Calvin cycle.
What is the first step of the Calvin cycle?
Carbon fixation
Input: 3CO₂, Rubisco
What happens in the second step of the Calvin cycle?
Release of G3P - G3P leaves the cycle and will go on to form glucose.
Output: 1 G3P
What is the third step of the Calvin cycle?
Regeneration - Use more ATP to regenerate RuBP.
What are the inputs for the Calvin cycle?
3CO₂ and Rubisco
What are the outputs of the Calvin cycle?
Glucose and other compounds
2 CO2 , 3 nadh , 1 fadh
Output: 1 G3p
What is produced during the reduction phase of the Calvin cycle?
6 ATP and 6 NADPH
