Biology Test 2 - Ch.8 Flashcards
The light-dependent reactions of photosynthesis are responsible for the production of..
ATP and NADPH
Which region of a chloroplast is associated with the capture of light energy?
thylakoid membrane
The colors of light that are most effective for photosynthesis are..
red, blue, and violet
During noncyclic photosynthesis, photosystem I functions to _________, and photosystem II functions to _________.
reduce NADP+; oxidize H20
How is a reaction center pigment in a photosystem different from a pigment in the antenna complex?
the reaction center pigment loses an electron when it absorbs light energy
The ATP and NADPH from the light reactions are used..
during the reactions of the Calvin cycle to produce glucose.
The carbon fixation reaction converts..
inorganic carbon into an organic acid
C4 plants initially fix carbon by..
incorporating CO2 into oxaloacetate, which is converted to malate
The overall flow of electrons in the light reactions is from..
H2O to NADPH.
If you could measure pH within a chloroplast, where would it be lowest?
In the lumen of the thylakoid
The excited electron from photosystem I..
Both a and c are correct.
If the Calvin cycle runs through six turns..
enough carbon will be fixed to make one glucose, but they will not all be in the same molecule.
Which of the following are similarities between the structure and function of mitochondria and chloroplasts?
they both create internal proton gradients by electron transport, and they both have a double membrane system
Given that the C4 pathway gets around the problems of photorespiration, why don’t all plants use it?
it also has an energetic cost
if the thylakoid membrane became leaky to ions, what would you predict to be the result on the light reactions?
it would stop ATP production
