Which of the following represents a reactant in the light reactions of photosynthesis?

The splitting of water occurs in photosystem I only.

If a C3 plant that normally closes its stomata during hot, dry conditions were triggered to open them instead, the most likely outcome would be that

High-energy electrons from molecules of NADH and FADH2 are transferred to a chain of proteins within the electron transport chain. What is the final electron acceptor (“Grandma”) in the electron transport chain?

Chemiosmosis, not substrate-level phosphorylation, occurs when protons pass through ATP synthase and combine with oxygen to make water.

Which of the following statements about the electron transport chain in cell respiration is CORRECT?

What is the main, direct role of the pigment molecules within the antenna or light-harvesting complex?

Some bacteria can use sulfur instead of oxygen as a final electron acceptor.  What would they produce during anaerobic respiration?

In which organelle of the plant does photosynthesis takes place?

If you measure the air a person inhales, and after, you then observe that the concentration ______ in the air they exhale.