The calvin cycle Flashcards
What is the calvin cycle ?
Rxn that converts CO2 to CH2O
Where does the calvin cycle occur?
Occurs in the stroma of chloroplasts
Why are the rxn’s are indirectly dependent on light?
because the ATP and NADPH
made during the light rxn fuel the
Calvin Cycle.
Three phases of calvin cycle?
Carbon Fixation
Reduction Reactions
Regeneration of RuBP
Rubisco can use O2 as a substrate in a process called….
photorespiration.
O2 and CO2 compete for the..
active site
C3 plants lose ____ of the sugars that could be made
under normal conditions.
20 %
Under hot, arid conditions the stomata close to keep as
much water inside the leaf. However, _____ can not
enter and ___ can not leave. So ___ builds up and
photorespiration increases.
CO2, O2
O2
Many plants begin the
Calvin Cycle with a __
carbon compound
instead of a __ carbon
compound.
4, 3
What are some examples of C4 plants?
grasses
(sugar cane and corn).
Where do C4 plants live?
Hot, sunny environments.
What are CAM plants?
Method used by water storing plants such as pineapple trees and
cactus.
Photosynthesis is “compartmentalized, what does this mean?
meaning carbon fixation and the Calvin cycle occur in separate cell types, minimizing photorespiration and increasing efficiency.
CAM plants use the same reaction as C4 plants, but it occurs in the _________
same cell
Stomata remain closed during the day and open at night to…..
preserve water
At night CO2 is taken into the leaves and is added to PEP, and
the steps proceed to produce __________.
malate
What happens after malate is produced at night ?
Malate is then stored in
vacuoles.
During the day, when the light reactions occur, sufficient ATP
and NADPH generation means that a ______ can be cleaved from
malate and enter the Calvin cycle.
CO2
Video for calvin cycle LOL
https://www.bing.com/videos/search?view=detail&q=how+to+understand+calvin+cycle+very+easy&mid=401D3EF3FA6BAD79432B401D3EF3FA6BAD79432B&FORM=VIRE
