photosynthesis :( Flashcards
heterotrophs
eat other organisms
autotrophs
make their own food
What does chlorophyll do?
absorbs light energy
whats stomata?
the opening things that take in CO2 and can let out water
what happens to water during photosynthesis? (oxidized or reduced)
oxidized (loses e-)
What happens to CO2? (oxidized or reduced)
reduced (gains e-)
explain what happens in a photosystem
a photon of light is absorbed in the pigments which excite the e- found in the pigments. The e- bounces around until it is absorbed by chlorophyll a. The e- jumps up into the final e- acceptor which is then used in an ETC.
Why is water split in photosystem II?
so that the electron can replace the ones lost from chlorophyll.
What are the three steps of the Calvin cycle?
- Carbon fixation
- splitting of step 1
- synthesizing RuBP
explain carbon fixation
rubisco helps bind CO2 (starting compound) with RuBP (finishing compound) making a 6-Carbon compound
Explain step 2 of the Calvin cycle
the 6-carbon compound gets split making phosphoglycerates and becomes G3P which makes sugar
Explain the last step of the Calvin Cycle