photosynthesis Flashcards
particle photon
smallst unit of lightehich osscilate on wavelengths
the visible light in the electromagnetic spectrum
380-750n
shortest wavelength
380n purple
longest wavelength
750n red
most effectively absorbed wavelengths
blue (500n) red (700n)
pigments found in chloroplast
chlorophyll (green)
cartenoid (orange)
xantophyll (orange)
anthocynins (red)
equation for photosynthesis
6CO2+ 6H2O—-> C6 H12 O6 + 6O2
two stages of photosynthesis
1) light dependant reaction
2) calvin cycle
light dependant reaction (simple)
happens in the thylakoid membrane of chloroplast, requires sunlight and basically light energy is captured and tranformed into atp
calvin cycle (simple)
happens in the stroma, does not require sunlight atp is used to create sugars (glucose) the plant will live and grow on
thylakoids
disk like structure inside chloroplast that help absorb light, they contain chlorophyll and are bound to the chloroplast membrane
grana
stacks of thylakoids inside chloroplasts
stroma
fluid filled space surrounding the grana
pigment
chemical molecules that absorb visible light
green is reflected
red and blue are easily absorbed
light dependant reactions (mc)
- photons of light get absorbed by chlorophyll in the thylakoids
2.electrons which are in the pigment get excited and used to produce atp
3.the displaced electrons are replaced by photolysis