Flashcards in Photosynthesis Deck (38)
What molecules are most commonly broken down to make ATP?
Where is energy stored in our food?
What molecule transfers energy from our food to our cells?
How does ATP deliver energy?
A phosphate is removed which releases energy when the bond is broken forming ADP.
What process do organisms use to make food in the absence of sunlight?
What is the chemical equation for photosynthesis?
6CO2 + 6 H20 + sunlight -> C6H1206 + 6O2 *** note the numbers should be subscript
What part of the electromagnetic spectrum contains visible light?
What structure allows plants to take in carbon dioxide and release oxygen
What are pigments?
molecules that absorb light
What are the 2 most common types of pigments found in plants?
Chlorophyll a and B
Why are plants green?
they absorb all wavelengths except green which is reflected
What is the function of accessory pigments?
allows plants to capture green light
What are carotenoids?
What are anthocyanins?
What molecules stores the most energy in your body?
What molecule does your body break down last for energy?
What organelle contains chlorophyll?
Why do leaves change color in the fall?
chlorophyll is ususally the first pigment to break down allowing the accessory pigments to become visible
Describe the structure of a chlorplast.
double membrane with stacks of thylakoids called grana surrounded by a fluid called stroma
Why are the light-dependant reactions called dependant?
they can not occur without light
Where do the light-dependent reactions take place?
on the thylakoid membrane
What 2 things are needed (reactants) during the light dependant reactions?
water and sunlight
What are photosystems?
clusters of pigments that absorb light energy
What happens to the electrons in the photosystem when it absorbs light?
they get excited
Where do the electron go once they have left the photosystems?
electron transport chain
Where does the photosystem get replacedment electrons?
splitting of water
Where does the oxygen you breath come from initally?
What is the role of NADP+ in the light dependant reactions?
carries the electrons from the light-dependent reactions to the calvin cycle? (energy delivery trucks)
What is the function of ATP synthase?
enzyme that makes ATP