Question

unit 3 test
mouse carbon dioxide levels
amount of carbon dioxide
time

1. in the graph above, what processes is the organism going through?

a. photosynthesis
b. fermentation
c. anaerobic respiration
d. cellular respiration

1. what are the products of photosynthesis?

a. sugar & oxygen
b. sugar & carbon dioxide
c. atp & oxygen
d. atp & carbon dioxide

1. in cellular respiration energy can be released by breaking down which molecule?

a. water
b. oxygen
c. glucose
d. carbon dioxide

1. in which type of cell does most photosynthesis occur?

a. leaf cell
b. root cell
c. stem cell
d. flower cell

1. what process needs oxygen in the mitochondria to make energy?

a. osmosis
b. cellular respiration
c. photosynthesis

1. what gas is produced in photosynthesis?

a. o₂
b. h₂o₂
c. co₂
d. c₆h₁₂o₆

1. a small amount of mass is destroyed in photosynthesis and cellular respiration.

a. true
b. false

1. atp is produced in photosynthesis.

a. true
b. false

1. what gas is produced in cellular respiration?

a. o₂
b. h₂o₂
c. co₂
d. c₆h₁₂o₆

1. mitochondria are in plant and animal cells.

a. true
b. false

1. sunlight is needed for cellular respiration.

a. true
b. false

Explanation:

1. The graph shows increasing carbon - dioxide over time, which is a sign of cellular respiration. In photosynthesis, carbon - dioxide is consumed, and in anaerobic respiration, other by - products are also involved. Fermentation is a type of anaerobic respiration. So the answer is D.
2. Photosynthesis uses carbon - dioxide and water to produce sugar (glucose) and oxygen. So the answer is A.
3. In cellular respiration, glucose is broken down to release energy. So the answer is C.
4. Leaf cells have chloroplasts and are the main site of photosynthesis. Root cells, stem cells, and flower cells do not have as many chloroplasts for photosynthesis. So the answer is A.
5. Cellular respiration in the mitochondria needs oxygen to make energy. Osmosis is the movement of water, and photosynthesis occurs in chloroplasts. So the answer is B.
6. Oxygen is produced in photosynthesis. Water is a reactant, carbon - dioxide is a reactant, and glucose is a product. So the answer is A.
7. According to the law of conservation of mass, mass is conserved in chemical reactions like photosynthesis and cellular respiration. So the answer is B.
8. ATP is produced in the light - dependent reactions of photosynthesis. So the answer is A.
9. Carbon - dioxide is produced in cellular respiration. Oxygen is a reactant, hydrogen peroxide is not a product, and glucose is a reactant. So the answer is C.
10. Mitochondria are present in both plant and animal cells for cellular respiration. So the answer is A.
11. Sunlight is needed for photosynthesis, not for cellular respiration. So the answer is B.

Answer:

1. D. Cellular Respiration
2. A. Sugar & Oxygen
3. C. Glucose
4. A. Leaf Cell
5. B. Cellular Respiration
6. A. O₂
7. B. False
8. A. True
9. C. CO₂
10. A. True
11. B. False