Photosynthesis Flashcards
What does photosynthesis do?
Converts light energy to chemical energy
What produces its own food?
Autotrophs
What obtains organic material from other organisms?
Heterotrophs
Pores where CO2 enters and O2 exit from
Stomata
Where are chloroplasts found?
Mesopyll
Sacs that hold chlorophyll
Thylakoid
The fluid in chloroplasts
Stroma
Photosynthesis reaction
6CO2 + 12H2O + Light energy —> C6H12O2 + 6H2O
What is a redox reaction?
A reaction with reduction and oxidation
What type of reaction is photosynthesis?
Redox reaction
What is oxidized in photosynthesis?
Water
What is reduced in photosynthesis?
CO2
What 2 things does photosynthesis consist of?
Light reactions
Calvin cycle
Where do light reactions take place?
Thylakoid
What are the steps of the light reactions?
Split water
Release oxygen
Reduce NADP+ to NADPH
Generate ATP from ADP
Where does the Calvin cycle take place?
Stroma
What goes into Calvin cycle and what comes out?
CO2 goes in
Sugar (CH2O) comes out
What happens to a chlorophyll electron when it absorbs light?
The electron is elevated to a higher energy level
What is the electron donor of the light reactions?
Water
The photosynthetic electron transport chain consists of 2 photosystem series. What are they, in order?”
Photosystem II
Photosystem I
What do ATP and NADPH produce in the second stage of the Calvin cycle?
Triose phosphate molecules
What are the 3 steps of the Calvin cycle?
Fixation
Reduction
Regeneration
What goes into light reactions and what comes out?
Water goes in
Light goes in
NADP+ and ADP go in from Calvin cycle
Oxygen comes out
ATP and NADPH come out to Calvin cycle
