Which of the following is a false statement about photosynthesis?
a. During the light-independent reactions, electrons and ATP from the light reactions combine with atmospheric carbon dioxide to produce sugars.
b. The light-independent reactions take place in the chloroplast stroma.
c. Oxygen produced during the light-independent reactions is released into the atmosphere.
d. Chlorophyll absorbs blue and red light and reflects green light.
e. The end product of photosynthesis is a carbohydrate such as glucose.

Which of the following sequences correctly represents the flow of electrons during photosynthesis?

a. NADPH → O₂ → CO₂

b. H₂O → NADPH → Calvin cycle

c. H₂O → photosystem I → photosystem II

d. NADPH → electron transport chain → O₂

When light strikes chlorophyll molecules in the reaction-center complex, they lose electrons, which are ultimately replaced by

a. Splitting water

b. Oxidizing NADPH

c. The primary electron acceptor

d. The electron transport chain

Which of the following does not occur during the light reactions of photosynthesis?

a. Water is released.

b. Electrons from chlorophyll are moved to a higher-energy state by light.

c. ATP is produced.

d. NADPH is produced to carry electrons to the light-independent reactions.

e. Oxygen is produced when water is split.

In mechanism, photophosphorylation is most similar to

a. Substrate-level phosphorylation in glycolysis.

b. Oxidative phosphorylation in cellular respiration.

c. Carbon fixation.

d. Reduction of NADP⁺.

Which process is most directly driven by light energy?

a. Creation of a pH gradient by pumping protons across the thylakoid membrane

b. Reduction of NADP⁺ molecules

c. Transfer of energy from pigment molecule to pigment molecule

d. ATP synthesis

Which of the following correctly identify a role of the ATP produced in the light-capturing reactions? Select True or False for each statement.

T/F It is used by rubisco to fix CO₂ to RuBP.

T/F It serves the same role as ATP produced by mitochondria.

T/F It is used to regenerate RuBP from G3P molecules.

T/F It is used to produce G3P molecules

Predict how the following conditions would affect the production of O₂, ATP, and NADPH and state whether noncyclic or cyclic electron flow would occur in each:

(3) blue and red photons hit a chloroplast, but a proton channel has been introduced into the thylakoid membrane, so it is fully permeable to protons.

Predict how the following conditions would affect the production of O₂, ATP, and NADPH and state whether noncyclic or cyclic electron flow would occur in each:

(2) blue and red photons hit a chloroplast, but no NADP⁺ is available