6. click on the calvin cycle
a. what is phase 1? carbon fixation
i. a five - carbon sugar is bound to a molecule of carbon dioxide (co₂) by the enzyme, rubisco.
ii. this forms 2 molecules of 3 - phosphoglycerate
b. what is phase 2?
i. each molecule of 3 - phosphoglycerate is reduced to form g3p which requires energy from
and electrons from
ii. 2 molecules of g3p leave the calvin cycle, to form
c. what is phase 3?
i. the other 5 g3p molecules are used to regenerate rubp so that the
can continue.
ii. these reactions require energy to occur. this comes from atp produced from the
quizl (not in the same order as the interactive site quiz)
a. which part of the plant cell performs photosynthesis?
i. mitochondrion
ii. nucleus
iii. cell wall
iv. chloroplast
what does light do when it strikes the chlorophyll molecules of photosystems i and ii?
i. light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.

Question

6. click on the calvin cycle
 a. what is phase 1? carbon fixation
  i. a five - carbon sugar is bound to a molecule of carbon dioxide (co₂) by the enzyme, rubisco.
  ii. this forms 2 molecules of 3 - phosphoglycerate
 b. what is phase 2?
  i. each molecule of 3 - phosphoglycerate is reduced to form g3p which requires energy from
  and electrons from
  ii. 2 molecules of g3p leave the calvin cycle, to form
 c. what is phase 3?
  i. the other 5 g3p molecules are used to regenerate rubp so that the
  can continue.
  ii. these reactions require energy to occur. this comes from atp produced from the
quizl (not in the same order as the interactive site quiz)
 a. which part of the plant cell performs photosynthesis?
  i. mitochondrion
  ii. nucleus
  iii. cell wall
  iv. chloroplast
what does light do when it strikes the chlorophyll molecules of photosystems i and ii?
 i. light causes glucose to be synthesized directly inside the chlorophyll molecules of the photosystems.

Accepted Answer

# Brief Explanations:
6a. Phase 1 of the Calvin - cycle is carbon fixation where RuBisCO binds CO₂ to a five - carbon sugar to form 2 molecules of 3 - phosphoglycerate.
6b. Phase 2 is reduction. Each 3 - phosphoglycerate is reduced to G3P using energy from ATP and electrons from NADPH. Two G3P molecules leave to form glucose or other organic compounds.
6c. Phase 3 is regeneration. Five G3P molecules are used to regenerate RuBP so the cycle can continue. The energy for these reactions comes from ATP produced in the light - reactions.
Quiz a: Chloroplasts are the organelles in plant cells that perform photosynthesis. Mitochondria are for cellular respiration, the nucleus contains genetic material, and the cell wall provides structure and protection.
The statement about light striking chlorophyll in photosystems I and II is incorrect. Light excites electrons in chlorophyll, which are then used to generate ATP and NADPH, not directly synthesize glucose.
# Answer:
6a. Carbon Fixation
6b. Reduction; ATP; NADPH; Glucose or other organic compounds
6c. Regeneration; Calvin Cycle; Light - reactions
Quiz a: iv. Chloroplast

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