44. The light reactions of photosynthesis supply the Calvin
cycle of:
Light energy
CO2 and ATP
H2O and NADPH
ATP and NADPH
45. Which of the following sequences correctly represents the
electron flow of photosynthesis?
NADPH> O2> CO2
H2O> NADPH> Calvin cycle
H20> photosystem I> photosystem II
NADPH> electron transport chain> O2
46. As an adaptation to the problem of developing photosynthesis
with stomata partially or totally closed, C4 and CAM are similar in
that:
In both cases, they only use photosystems I.
Both types of plants make sugars without the Calvin cycle.
In both cases, CO2 is incorporated into other organic molecules
before reaching the Calvin cycle.
In both cases, they make most of their sugars in the dark.
47. Which of these processes does not occur in the Calvin
cycle?
Carbon fixation.
The oxidation of NADPH
The release of oxygen.
The regeneration of the CO2 acceptor.
48. As a mechanism, phosphorylation is more similar to:
Phosphorylation at the substrate level in glycolysis.
Oxidative phosphorylation in cellular respiration.
Carbon fixation.
The reduction of NADPH.
49. Which of these is the process that is most guided by solar
energy?
Creation of the pH gradient by pumping protons through the
thylakoid membrane.
The reduction of NADP + molecules.
The transfer of energy from pigment molecules to pigment
molecules.
The synthesis of ATP.