The Production of Glyceraldehyde 3-Phosphate G3P) in the Calvin Cycle

question 49

Multiple Choice

The production of glyceraldehyde 3-phosphate G3P) in the Calvin cycle requires six molecules each of ATP and NADPH. Another three molecules of ATP are then used in the cycle. What is the purpose of the three additional ATP molecules?

• A) to regenerate the starter molecule RuBP
• B) to attract the next CO₂ molecule to enter the Calvin cycle
• C) to reduce the molecules of G3P to form glucose
• D) to join acetyl CoA into pyruvate, preparing it to enter the citric acid cycle
• E) to fix carbon dioxide to RuBP

---

Definitions:

Alcohol

A psychoactive substance found in beverages such as beer, wine, and spirits, known for its effects on mood, behavior, and health.

Night Terrors

Intense episodes of fear that occur during sleep, often causing the person to wake up in a terrified state.

Sleepwalking

A behavior disorder that originates during deep sleep and results in walking or performing other complex behaviors while asleep.

Children

Individuals in the early stages of human development, typically considered to be from birth to puberty.