Other Light Reaction Concepts - Biochemistry
Card 1 of 8
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of 
would be produced?
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of
Tap to reveal answer
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of 
.
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of
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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?
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?
Tap to reveal answer
During photosynthesis, the dark phase follows the light phase. The light phase produces 
which, along with 
, is fed into the dark phase where it is consumed (becomes 
and 
). If the light phase continues working, but the dark phase does not, the 
and 
created during the light phase will not be consumed. Thus, there will be a decrease in the level of 
and 
(the correct answer). The relative proportion of 
will actually increase.
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.
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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In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of would be produced?
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of
Tap to reveal answer
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of .
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of
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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?
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?
Tap to reveal answer
During photosynthesis, the dark phase follows the light phase. The light phase produces which, along with , is fed into the dark phase where it is consumed (becomes and ). If the light phase continues working, but the dark phase does not, the and created during the light phase will not be consumed. Thus, there will be a decrease in the level of and (the correct answer). The relative proportion of will actually increase.
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.
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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In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of would be produced?
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of
Tap to reveal answer
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of .
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of
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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?
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?
Tap to reveal answer
During photosynthesis, the dark phase follows the light phase. The light phase produces which, along with , is fed into the dark phase where it is consumed (becomes and ). If the light phase continues working, but the dark phase does not, the and created during the light phase will not be consumed. Thus, there will be a decrease in the level of and (the correct answer). The relative proportion of will actually increase.
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.
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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In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of would be produced?
In photosynthesis, if photosystem II absorbs 12 photons, how many molecules of
Tap to reveal answer
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of .
Absorbing four photons by photosystem II creates one oxygen molecule, so absorbing 12 would produce 3 molecules of
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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?
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?
Tap to reveal answer
During photosynthesis, the dark phase follows the light phase. The light phase produces which, along with , is fed into the dark phase where it is consumed (becomes and ). If the light phase continues working, but the dark phase does not, the and created during the light phase will not be consumed. Thus, there will be a decrease in the level of and (the correct answer). The relative proportion of will actually increase.
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.
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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