Class Copy: Please do not write answers on this paper.
1. Which phrase best describes the function of the ATP molecule?
a. stores energy
c. absorbs energy
b. carries energy
d. converts energy
2.Where does the chemical energy to produce ATP come from?
a. the conversion of ATP to ADP
b. the use of chemicals from the environment to build sugars
c. the addition of a phosphate group to ATP
d. the breakdown of carbon-based molecules into smaller molecules
3. Energy is released from an ATP molecule for cellular processes when it
a. has a phosphate group removed. c. converts a phosphate group to ADP.
b. stores an extra phosphate group. d. produces a sugar molecule.
4.Which of the following statements best describes the process of photosynthesis?
a. Plants use oxygen to make simple sugars.
b. Chlorophyll builds sugars in the thylakoid membrane.
c. Light breaks down water molecules and releases carbon dioxide.
d. Chloroplasts absorb sunlight and store chemical energy.
5.The main light-absorbing molecules found in plant leaves are called
a. chloroplasts.
c. chlorophyll.
b. thylakoids.
d. grana.
_ 6.Which of the following takes place in the light-dependent reactions of photosynthesis?
a. Sugars are made.
c. Chlorophyll is pumped.
b. Energy is captured.
d. CO2 is formed.
7.Where do the hydrogen ions for the photosystems of the
light-dependent reactions come from?
a. sugars
c. acids
b. sunlight
d. water
8.Which phrase best describes the electron transport chain in photosynthesis?
a. a chain of photosynthetic proteins located in the stroma
b. a collection of enzymes used to make ADP
c. a series of proteins located in the thylakoid membrane
d. a group of enzymes that carries energy to the Calvin cycle
9.In the light-independent reactions of photosynthesis,
a. CO2 enters the Calvin cycle and sugars are made.
b. H2O is broken down and oxygen is released.
c. NADPH is produced and transferred to photosystem I.
d. electrons are energized and used to pump H ions.
10.What is the relationship between the light reactions and the Calvin cycle?
a. The light reactions produce ATP synthase for the Calvin cycle.
b. The light reactions transfer hydrogen ions and carbon dioxide to the Calvin cycle.
c. The light reactions transfer energy to the Calvin cycle through ATP and NADPH.
d. The light reactions build sugars with the carbon dioxide produced by the Calvin
cycle.