8.2 Flashcards
(19 cards)
What are pigments?
lights absorbing molecules.
What role do pigments play in the proces of photosynthesis?
Photosynthetic organisms capture energy from sunlight with pigments.
Name pigment
Chlorophyll: absorb light in blue violet and red regions, and doesn’t absorb light well on the green region.
Leaves
reflect green light.
Carotine
absorb light on the red and orange pigment
Were does photosynthesis take place?
Take place inside organells called chloroplast
Were are pigments located?
in the thylakoid membrane.
Why is chlorophyll so important?
it create high energy electrons that make photosynthesis work.
What are electron carriers?
An electron carrier is a compound that that can accept a pair of high-energy electrons and transfer them, along with most of their energy, to another molecule.
What are electron carriers?
transfer pairs of high energy electrons from one molecule to another.
Example: NADPH
Photosynthesis in words
is the combination of carbon dioxide and water that is converted with light to sugar and oxygen.
Light dependent
happens on the thylakoid membrane
need the sun light + water
1. produce ATP and NADPH (important for the light independent reaction to happen)
2. the product is oxygen
Light independent reaction
need co2 uses ATP and NADPH molecules to produce sugars, ADP, and NADP+.
2. Happens in the stroma.
Visible spectrum?
are wavelengths that are visible to our eyes and make up
Thylakoids
a membrane found on the chloroplast.
Granum
group of thylakoids
Stroma
the fluid outside the thylakoids
NADP+
carries pairs of electrons and an H+ ion from one place to another.
NADPH
carries pairs high energy electrons produced by the sunlight.
