H+ exit the thylakoid membrane through ATP synthase which catalyses the formation of ATP using the energy in the H+ gradient. NADP accepts H+ and gets reduced
Oops!
Check
Okay!
Check
15
Which colours of light do chlorophyll pigments absorb, and which do they reflect?
Chlorophyll a and b absorb red light (wavelength 650-700 nm) and blue light (wavelength 400-450 nm). They reflect green light (500-550nm).
Oops!
Check
Okay!
Check
trap
No points!
Oops!
star
Double points!
Okay!
rocket
Go to first place!
Okay!
thief
Give points!
5
10
15
20
25
baam
Lose 15 points!
Oops!
seesaw
Swap points!
Okay!
rocket
Go to first place!
Okay!
lifesaver
Give 20 points!
Oops!
25
What happens during the regeneration step of the light-independent stage?
TP is converted into RuBP, to be used again for fixation of CO2. This process requires ATP.
Oops!
Check
Okay!
Check
15
Name the technique used to separate chloroplast pigments.
chromatography
Oops!
Check
Okay!
Check
15
How is the Rf value calculated in chromatography?
distance travelled by the pigment/distance travelled by the solvent
Oops!
Check
Okay!
Check
15
Which photosynthetic pigment is found in all photosynthetic plants?
chlorophyll a
Oops!
Check
Okay!
Check
15
During fixation, which molecule does CO2 combine with?
Ribulouse bisphosphate (RuBP) a 6-C sugar
Oops!
Check
Okay!
Check
thief
Give points!
5
10
15
20
25
shark
Other team loses 5 points!
Okay!
shark
Other team loses 5 points!
Okay!
banana
Go to last place!
Oops!
20
Describe the reduction step of the light-independent stage.
2 molecules of GP are reduced to 2 of triose phosphate. (ATP/NADPH required) ATP is hydrolysed to provide energy for the conversation, NADPH is reduces GP)
Oops!
Check
Okay!
Check
20
What happens to water during the light-dependent stage of photosynthesis?
Water is split using light energy (photolysis). 2H2O â 4H+ + 4e- + O2
Oops!
Check
Okay!
Check
25
Define photoactivation
process where two electrons in the chlorophyll molecule become excited (due to absorption of light energy) causing them to leave the molecule.
Oops!
Check
Okay!
Check
15
Where in the chloroplast does the light-independent stage of photosynthesis occur?
he stroma
Oops!
Check
Okay!
Check
15
Plants containing carotenoid pigments (xanthophyll and carotene) tend to be which colours?
Red, orange and yellow. The carotenoids absorb blue light and reflect red, orange and yellow. These pigments give carrots, tomatoes and egg yolk colour
Oops!
Check
Okay!
Check
15
Name the enzyme that catalyses the fixation of CO2
