(SBI4U1) Calvin-Benson Cycle

Question 1

Step 1

Answer 1

3 Carbon dioxide goes into the cycle, reacting with

3 RuBP, catalyzed by rubisco, and producing 3 6C-2P

Question 2

Step 2

Answer 2

The 3 6C-2P quickly becomes 6 3C-1P also known as PGA

Question 3

Step 3

Answer 3

6 ATP comes in and adds 6 P to the cycle, creating 6 3C-2P

Question 4

Step 4

Answer 4

6 NADPH comes in and adds 6 electrons and kicking off 6 P, creating 6 3C-1P also known as G3P

Question 5

Step 5

Answer 5

1 3C-1P falls off, forming half of a glucose

Question 6

Step 6

Answer 6

2 P fall off the remaining 5 3C-1P as they re-organize to 3 5C-1P

Question 7

Step 7

Answer 7

3 ADP comes in and adds 3 P to the cycle, creating 3 5C-2P also known as RuBP

Question 8

What is PGA?

Answer 8

Phosphoglycerate, a carboxylic acid

Question 9

What is G3P?

Answer 9

Glyceraldehyde-3-phosphate, an aldehyde

Question 10

What is the difference between PGA and G3P?

Answer 10

PGA is a carboxylic acid whilst G3P is an aldehyde

Question 11

What is RuBP?

Answer 11

Ribulose-bi-phosphate

Question 12

What is Rubisco?

Answer 12

An enzyme that catalyzes the reaction between carbon dioxide and RuBP