Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
photosynthesis
|
the conversion of light energy into chemical energy.
|
|
|
autotroph
|
-"producers" of the environment
-plants: photoautotrophs -produce their own organic material |
|
|
heterotrophs
|
-make their organic material by consuming organic material.
|
|
|
chloroplast
|
-site of photosynthesis
|
|
|
mesophyll
|
the fleshy part of a leaf where there is the highest concentration of chloroplast
|
|
|
stomata
|
pores in a leaf used for gas exchange
|
|
|
photosynthesis reaction
|
6CO2 + 6H2O + Light energy = C6H12O6 + 6O2
|
|
|
2 stages of photosynthesis
|
-light reactions in the thylakoid membrane
-calvin cycle |
|
|
products of photosynthesis
|
-O2
-sugar |
|
|
chloroplast pigments
|
-clustered in the thylakoid membrane
|
|
|
Chlorophyll A
|
-absorbs blue-violet and red light
-reflects green-yellow -Participates directly in light reactions. |
|
|
Chlorophyll B
|
- absorbs blue and orange light
-reflects green-yellow -Transfers all energy to A |
|
|
Carotenoids
|
-reflect orange and yellow
-disperses excess energy -energy provider for A |
|
|
photosystem
|
-light harvesting unit in the thylakoid membrane
-two different systems II, then I |
|
|
reaction center
|
-chlorophyll A that accepts all energy and splits water in the photosystem
|
|
|
Photophosphorylation
|
-electron transport chain
-proton pump into ATP synthase -products: ATP, NADPH |
|
|
Calvin cycle
|
-anabolic pathway
-3CO2 + 3RuBP = 6PGA -6PGA + 6ATP + 6NADPH = 6G3P -5G3P + 3ATP = 3RuBP |
|
|
anabolic pathway
|
-uses energy to make molecules
|
|
|
products and energy required of anabolic pathway
|
-products: 1 G3P, 6NADP+, 6H+, 9ADP
-energy required: 9ATP, 6NADPH, 3CO2 |
|
|
C3 plants
|
-take in CO2 directly from atmosphere
-rubisco fixes the CO2 |
|
|
C4 plants
|
-sugarcane, grass, corn
-2 types of photosynthetic cells: mesophyll, bundle sheath -PEP carboxylase: carbon fixation |
|
|
Mesophyll cell
|
-fixation of CO2
|
|
|
Bundle sheath cells
|
-calvin cycle
|
|
|
CAM plants
|
-water storing succulents
-stomata open at night and closed durring the day -PEP carboxylase: carbon fixation |
