Chapter 8.2- Calvin cycle

Question 1

What are the three major steps of the calvin cycle?

Answer 1

carboxylation

Reduction

Regeneratiion

Question 2

What is carboxylation?

Answer 2

step 1:
- when carbon dioxide get added to a 5 carbon ring
- carbon dioxide is added to RuBP
- Rubisco catalyzes the reaction and 2 3- phosphoglycerate is formed

Question 3

What is Reduction?

Answer 3

Step 2: which energy and electrons are transferred
to the compounds formed in step 1

Question 4

What is regeneration?

Answer 4

Step 3: regeneration of the 5-carbon molecule

Question 5

Why is NADPH and ATP essential to the Calvin cycle? Why is calvin cycle only produced in sunlight?

Answer 5

the Calvin cycle cannot operate without the steady supply of NADPH and ATP. NADPH ATP are products of light photosynthesis therefore it only can occur in light.

Question 6

Experiment that explains how carbon is incorporated into carbohydrates?

Answer 6

Preventing carboxylation resulted in an excess of RuBP and less 3-PGA,
leading researchers to determine that the initial step in the Calvin cycle
unites the 5-carbon RuBP with , resulting in the production of two
molecules of 3-PGA.

Question 7

What do cells do with excess carbohydrates?

Answer 7

they store it into starch because Strach does not undergoes osmosis or potentially damage the cell

Question 8

What does light energy produce?

Answer 8

NADPH and ATP and oxygen