Biochemistry : Light Reactions
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Example Questions
Example Question #1 : Carbohydrate Metabolism
In photosynthesis, what is the purpose of absorbing light into chloroplasts?
The energy from the absorbed light generates NADPH from the electrons of water molecules, ultimately leading to the creation of carbon dioxide
The energy from the absorbed light moves the electrons from NADPH to water molecules, ultimately setting up a proton gradient
The energy from the absorbed light generates NADPH from the electrons of water molecules, ultimately setting up a proton gradient
The energy from the absorbed light causes the generation of NADH from the electron of water molecules, ultimately setting up a proton gradient
The energy from the absorbed light causes all of the electrons in the chloroplast to jump to higher energy levels
The energy from the absorbed light generates NADPH from the electrons of water molecules, ultimately setting up a proton gradient
In photosynthesis, light is absorbed in order to move electrons from water molecules to NADPH. The reduction of 
Example Question #76 : Catabolic Pathways And Metabolism
Photosynthesis consists of a light phase and a dark phase. The light phase precedes the dark phase and supplies it with __________.
During photosynthesis, the light phase is responsible for creating 
Example Question #1 : Carbohydrate Metabolism
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of 
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of 
Example Question #78 : Catabolic Pathways And Metabolism
During photosynthesis there is both a light phase and a dark phase. If the light phase were to continue unabated, but the dark phase came to a halt, which of the following is most likely to occur?
Increased sensitivity of the chloroplast to incoming light
A proportional decrease in 
An increase in the production of carbohydrates
Decreased sensitivity of the chloroplast to incoming light
Decrease in the level of
Decrease in the level of
During photosynthesis, the dark phase follows the light phase. The light phase produces 
Carbohydrate production is a result of the dark phase working properly, so their levels would decrease in this instance. The sensitivity of the chloroplast to light would not change.
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