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biolchem 415 lec 20
photosynthesis, calvin cycle
11
Biochemistry
Undergraduate 3
03/21/2011

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Term
What is photosynthesis?
Definition
The process by which the energy of light is used to synthesis NADPH and ATP.
Term
What is the Calvin cycle?
Definition
the process by which NADPH and ATP are utilized to synthesize hexoses from carbon dioxide and water.
Term
where does photosynthesis and the calvin cycle take place?
Definition
it takes place in the chloroplasts.
Term
what purpose does chlorophyll serve?
Definition
chlorophyll is a pigment molecule that absorbs light. it is found in choloplasts in plant leaves.
Term

CO2 + H20 => (CH20)n + O2


Definition
water and carbon dioxide combine to form carbohydrates and oxygen molecule.
Term
Explain the two photosystem
Definition
It reduces NADPH and generate a proton gradient.
Term
what is PS I?
Definition
uses e- to reduce NADP+
Term
PS II
Definition
oxidizes H2O; generates O2, e-, and a H+ gradient
Term
metabolic energy drives flow of electrons resulting in what?
Definition

- reduction of oxygen to water

- oxidation of NADH to NAD+

- proton gradient to drive ATP synthesis

Term
light energy drives a flow of electrons resulting in what?
Definition

- oxidation of water to oxygen

- reduction of NADP+ to NADPH

- proton gradient to drives ATP synthesis

 

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