Light Reactions
What photosystem does photosynthesis start in?
It starts in photosystem 2 (p680)
What is another name for the Dark Reaction?
The Light Independent or Calvin Cycle
What is the molecule that absorbs certain wavelengths of light and reflects or transmits others?
Pigments
What color do leaves reflect on the spectrum of visible light?
Green
What do you call organisms that perform photosynthesis?
Autotrophs
Where does photosynthesis occur?
In the Thylakoid membrane
Where does the light-independent reaction occur?
It occurs in the stroma
What does Xanthophyll affect in leaves?
Its the yellow pigment that you see in the fall
What three colors can be combined to create white light?
Red, Blue, and Green
What pores in the leaf allows CO2 and O2 to leave and enter the leaf?
Stomata (stoma singular)
What is photolysis?
Its the splitting of water to release electrons
How many G3Ps does it take to make one glucose?
It takes 2
What do Accessory Pigments do?
They broaden the range of light that can be absorbed by Chlorophyll A
What do different wavelengths of light carry?
Different amounts of energy
What is the balanced equation for Photosynthesis?
6CO2 + 6H2O -----> C6H12O6 + 6O2
What is the final electron acceptor in photosynthesis?
NADP+
What catalyzes carbon fixation?
Rubisco catalyzes carbon fixation
What pigment participates directly in light reactions and absorbs blue-violet and red lights?
Chlorophyll A
What color on the visible light spectrum has the longest wavelength?
Red
What are all three of the final products of the Light Reactions?
Oxygen, NADPH, ATP
What provides the energy for the light-independent reaction?
NADPH and ATP from the light-dependent reaction
What is the function of carotenoids?
They absorbs blue-green light and dissipates excessive amounts of light that would damage chlorophyll A
What are the particles that make up light waves?
Photons