biology chapter 7: photosynthesis Flashcards
autotroph
auto = automatic
they make their own food (glucose: C6H12O6)
Base of the foodchain: provides glucose for everyone else.
heterotroph
consume food for their energy (they cant make their own food)
photosynthesis occurs where?
Chloroplasts
what are chloroplasts?
the plate (in the pancake scenario)
green bean lookin things with the pancake lookin stacks inside
Thylakoid
the green pancakes (in the pancake scenario)
stroma
thick fluid
(the syrup for the pancakes)
phloropyll
light-absorbing pigment
(the food dye put in the pancake to make it green)
photsynthesis equation
6CO2 + 6H2O –> C6H12O6 + 6O2
photosynthesis reactants
6CO2 and 6H2O
(Carbon Dioxide and Water)
photosynthesis yeild (the arrow)
light energy
photosynthesis products
C6H12O6 and 6O2
(glucose and oxygen)
in a redox reaction, when is Hydrogen being gained?
in reductions
CO2 –> C6H12O2
(carbon dioxide turned into glucose)
in a redox reaction, when is hydrogen being lost?
oxidation
H2O –> O2
(water is being turned into oxygen)
two stages of photosynthesis
light reaction and Calvin Cycle
stage one: light reaction
location, what comes in, and what comes out?
locations: thylakoid (pancakes)
whats going in: light energy and water (through stroma/pores)
whats going out: oxygen
stage two: Calvin Cycle: (the dark reaction)
location, whats going in, and what’s going out?
location: stroma (the syrup)
whats going in: carbon dioxide (reactant)
whats going out: glucose (product)
absorption of light
visible light
what nanometers
380-750 nanometers (the whole rainbow)
all colors are being absorbed
we see green in photosynthesis b/c it’s being reflected.
types of plants
C3, C4, and CAM
C3 plants
drop in CO2
rise in O2
stromata (pores) open or closed
C4 plants
Closed stomata during the day due to heat
open during the night b/c it’s cooler
reactions happen MOSTLY at night
CAM plants
same as C4, but reactions happening ALL at night, not just mostly.
