1. BIOLOGY
Ch. 4, Part 1 Review

2. Photosynthesis Video Links:

3. Which of the following statements is true for all cells?
a. They use solar energy. b. They use photosynthesis.
c. They use chemical energy.
d. They use chemosynthesis.
c. They use chemical energy.

4. Which phrase best describes the function of the ATP molecule?
a. stores energy
b. carries energy
c. absorbs energy
d. converts energy
b. carries energy

5. d. the breakdown of carbon-based molecules from food
Where does the chemical energy to produce ATP come from?
the conversion of ATP to ADP
the use of chemicals from the environment to build sugars
the addition of a phosphate group to ATP
the breakdown of carbon-based molecules from food
d. the breakdown of carbon-based molecules from food

6. Energy is released from an ATP molecule for cellular processes when it
a. has a phosphate group removed. b. stores an extra phosphate group. c. adds a phosphate group to ADP.
d. produces a sugar molecule.
a. has a phosphate group removed.

7. Which of the following is used in chemosynthesis?
a. sunlight b. heat from hydrothermal vents
c. chemical energy d. amino acids
c. chemical energy

8. d. Chloroplasts absorb energy from sunlight to make sugars.
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 energy from sunlight to make sugars.
d. Chloroplasts absorb energy from sunlight to make sugars.

9. What is the term for an organism that makes its own source of chemical energy?
a. decomposer
b. producer
c. chloroplast
d. protist
b. producer

10. The main light-absorbing pigment molecules found in plant leaves are called
a. stroma.
b. thylakoids.
c. chlorophyll.
d. grana.
c. chlorophyll.

11. The function of the light-dependent reactions is to
build sugars.
release carbon dioxide.
capture and transfer energy.
form water molecules.
c. capture and transfer energy.

12. The light-independent reactions of photosynthesis need ________________ from the atmosphere.
a. carbon dioxide. c. water.
b. oxygen d. cellulose.
c. carbon dioxide.

13. 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.
b. Energy is captured.

14. Where do the hydrogen ions for the photosystems of the light-dependent reactions come from?
a. sugars
b. sunlight
c. acids
d. water
d. water

15. c. a series of proteins located in the thylakoid membrane
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
c. a series of proteins located in the thylakoid membrane

16. a. CO enters the Calvin cycle and sugars are made.
In the light-independent reactions of photosynthesis, ________________
a. CO enters the Calvin cycle and sugars are made. b. ATP 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.
a. CO enters the Calvin cycle and sugars are made.

17. a. The photosystems produce ATP synthase for the Calvin cycle.
What is the relationship between the photosystems and the Calvin cycle?
a. The photosystems produce ATP synthase for the Calvin cycle.
b. The photosystems transfer hydrogen ions and carbon dioxide to the Calvin cycle.
c. The photosystems transfer energy to the Calvin cycle through ATP and NADPH.
d. The photosystems build sugars with the carbon dioxide produced by the Calvin cycle.
a. The photosystems produce ATP synthase for the Calvin cycle.

18. Label the following diagram using the choices below:
16. energy from food
17. energy for cells
18. adenosine diphosphate
19. adenosine triphosphate A D B C
16. D
17. B
18. C
19. A

19. Where in plant cells are the energy- absorbing molecules for photosynthesis located?
a. stroma
b. thylakoids
c. ATP synthase
d. mitochondria
b. thylakoids

20. Which of the following molecules found in the food we eat is most commonly broken down to make ATP?
carbohydrates
proteins
lipids
vitamins
a. carbohydrates

21. Which of the following molecules releases the most ATP when broken down?
a. carbohydrates
b. proteins
c. lipids/fats
d. vitamins
c. lipids/fats