Chapter 7 Photosynthesis Calvin cycle

C4 photosynthesis is an adaptation to hot, dry conditions in which a). CO2 is fixed and stored in the leaf. b). water is stored in the stem. c). oxygen is stored in the root. d). light energy is stored in chloroplasts.

a). CO2 is fixed and stored in the leaf.

The colors of light that are most effective for photosynthesis are a). red, blue, and violet. b). green, yellow, and orange c). infrared and ultraviolet d). All colors of light are equally effective.

a). red, blue, and violet.

Within chloroplasts, the semiliquid matrix in which the Calvin cycle occurs is called: a). stroma. b). thylakoids. c). grana. d). photosystem.

a). stroma.

The final product of the Calvin cycle is a). RuBP. b). G3P. c). glucose. d). PGA.

b). G3P.

During photosynthesis, ATP molecules are generated by a). the Calvin cycle. b). chemiosmosis. c). the electron transport chain. d). light striking the chlorophyll molecules.

b). chemiosmosis.

A photosystem consists of a). a group of chlorophyll molecules, all of which contribute excited electrons to the synthesis of ATP. b). a pair of chlorophyll a molecules. c). a group of chlorophyll molecules held together by proteins. d). a group of chlorophyll molecules that funnels light energy toward a single chlorophyll b molecule.

c). a group of chlorophyll molecules held together by proteins.

Visible light occupies what part of the electromagnetic spectrum? a). the entire spectrum b). the entire upper half (with longer wavelengths) c). a small portion in the middle d). the entire lower half (with shorter wavelengths)

c). a small portion in the middle

The overall purpose of the Calvin cycle is to: a). generate molecules of ATP. b). generate NADPH. c). give off oxygen for animal use. d). build organic (carbon) molecules.

d). build organic (carbon) molecules.

Oxygen is produced during photosynthesis when a). the carbon is removed from carbon dioxide to make carbohydrates. b). hydrogen from water is added to carbon dioxide to make carbohydrates. c). water molecules are split to provide electrons for photosystem I. d). water molecules are split to provide electrons for photosystem II.

d). water molecules are split to provide electrons for photosystem II.

Which photosystem is believed to have evolved first? a). photosystem I b). photosystem II c). cyclic photophosphorylation d). All photosystems evolved at the same time, but in different organisms.

c). cyclic photophosphorylation