calvin cycle

Question 1

What is the Calvin cycle?

Answer 1

The Calvin cycle is a series of reactonis that results in conversoin of carbon dioxide into the organic moleues needed to build new cells. It occurs in the stroma, which is the area of the chloroplast surrounding the thylakoid membrane.

Question 2

Where does the Calvin cycle take place in the chloroplast?

Answer 2

stroma

Question 3

What does the Calvin Cycle use, which are products of the light reacton of photosynthesis?

Answer 3

ATP and NADPH

Question 4

The Calvin cycle begins by the attachment of CO2 to which of the following?

A) RuBP

B) glucose

c) 3-phophoglycerate
d) glyceraldehyde 3-phosphate
e) none of the above

Answer 4

A) RuBP

Question 5

True or False: Glyercaldehyde-3-phophate adn 3-phosphoglycerate are three-carbon molecules produced during the Calvin Cycle.

Answer 5

True

Question 6

the Calvin Cycle functions to construct carbohydrates from carbon dioxide.

Answer 6

true

Question 7

What is the first step of the reaction?

Answer 7

During the Calvin cycle, carbon dioxide (CO2) is added ot a 5-carbon molecule called RuBP. The resulting 6-carbon molecule is unstable and quickly splits into two 3-carbon molecules called 3-phosphoglycerate.

Question 8

What is the second step reaction of Calvin cycle?

Answer 8

Using the energy form ATP and reducing power from NADPH, which are products of the light reactions, the pair of 3-hophoglyerates move through a series of reaction and are converted into two molecules of glyceraldehyde-3-phosphate.

Question 9

What happens after the second step reaction in Calvin cycle?

Answer 9

When several of these glyceraldehyde-3-phosphate molecules have been produced, some combine to make glucose while others are resused in teh Calvin cycle. To generate an entire new glucose molecule, the cycle has to turn several times because each turn of the cycle adds only one carbon atom from each molecule of carbon dioxide.