Light independent stage

Question 1

what is the calvin cycle

Answer 1

a metabolic pathway of the light independent stage, occuring in the stroma where co2 is fixed with products of light dependent stage to produce organic compounds

Question 2

where does calvin cycle take place

Answer 2

stroma

Question 3

How many RuBP and carbon dioxide is required to make 12 glycerate phosphate

Answer 3

6RuBP.
6CO2

Question 4

How many carbons atoms are in RuBP

Answer 4

5

Question 5

how many carbon is in 1 molecules of glycerate phosphate

Answer 5

3 carbon

Question 6

what is the carbon fixation stage

Answer 6

when the enzyme RuBisCO catalysies 6 molecules of carbon dioxide to bind with 6 RuBP, to produce glycerate phosphate

Question 7

what is the reduction stage pf the calvin cycle

Answer 7

The products of light dependent stage are reduced after glycerate phosphate is produced, to produce 12 triose phosphate from 12 GP.

ATP—- ADP + Pi
NADPH—— NADP

Question 8

what is the product synthesis stage of the calvin cycle

Answer 8

when 2 molecules of triose phosphate are joined through condensation to produce 1 glucose molecules

Question 9

Describe the difference in carbon atoms of triose phosphate and glucose

Answer 9

TP is a 3 carbon compound and glucose is a 6 carbon compound

Question 10

how many triose phosphate molecules are required to produce one molecule of glucose

Answer 10

2 molecules of triose phosphate (3 carbon) needed to make on glucose ( 6 carbon)

Question 11

what is the regeneration

Answer 11

10 triose phosphate molecules to make 6 RuBP molecules

Question 12

what are the steps of the calvin cycle

Answer 12

1- fixation of carbon
2- reduction stage
3- product sysnthesis stage
4- regeneration stage

Question 13

in the carbon fixation stage. what molecules need to enter the active site of RuBPisco

Answer 13

6 co2 and 6 RuBP

Question 14

what are the yses if triose phosphate

Answer 14

tp can be used to synthesis amino acids, fatty acids, glycerol

Glucose is converted to starch and cellulose

Question 15

how much atp is used to make 2 molecules of Glycerate phosphate

Answer 15

1

Question 16

what is the first step of calvin cycle

Answer 16

carbon dioxide is combined with RuBP to make 2 glycerate phosphate

catalysed by RuBisco

Question 17

what happens once the two glycerate phosphate molecules are made

Answer 17

they are reduced as they accept hydrogen ions from the reduced NADP and become 2 triose phosphate

Question 18

what happens with the triose phosphate when it is created

Answer 18

used to regenerate RuBP

Question 19

if 12 molecules of TP are produced, how are the molecules used

Answer 19

10 are used to regenerate 6 molecules of RuBP.

the remaining 2 are a product

Question 20

some tp is used to make organic compounds

Answer 20

amino acids, glycerol, glucose

Question 21

how many turns of the calvin cycle are required to make 1 molecules of glucose

Answer 21

6

Question 22

how many turns of the calvin cycle are needed to make 2 molecules of tp

Answer 22

6

Question 23

how many tp molecules are needed to make 1 molecule of glucose

Answer 23

2

Question 24

why does the calvin cycle only run at daytime

Answer 24

because light dependent stage, pumps protons from stroma to thylakoid space, which creates optimum ph for RuBisCO.

products of light dependent stage, atp and nadp are required for calvin cycle

Question 25

what are the products of the independent stage

Answer 25

2 tp

Question 26

what enzyme catalyses the fixation of carbon dioxide

Answer 26

RuBisCO

Question 27

how does glycerate phosphate turn into triose phosphate

Answer 27

it accepts hydrogen from reduced nadp, produced in the light dependent stage

Question 28

does the regeneration of RuBP require atp

Answer 28

yes

Question 29

when is ADP produced in the calvin cycle

Answer 29

• when glycerate phosphate is reduced to triose phosphate

-when RuBP is being regenerated by triose phosphate