Question

use the figure below for questions 12 - 13. 12. what molecules are represented in #2? a. co₂ & o₂ b. h₂o & c₆h₁₂o₆ c. co₂ & h₂o d. o₂ & c₆h₁₂o₆ 13. what molecules are represented in #1? a. co₂ & o₂ b. h₂o & c₆h₁₂o₆ c. co₂ & h₂o d. o₂ & c₆h₁₂o₆ 14. where does cellular respiration occur in the cell? a. mitochondria b. chloroplast c. nucleus d. golgi 15. most of the oxygen gas present in the atmosphere is produced as a result of? a. osmosis b. cellular respiration c. photosynthesis d. decomposition 16. photosynthesis can still occur if light is present. a. true b. false 17. no photosynthesis takes place in the petals of a flower. what explanation makes the above statement true? a. the statement is false because photosynthesis takes place only in the petals of a flower. b. photosynthesis takes place in the roots and the glucose is transported to the rest of the flower via the xylem. c. the statement is false, photosynthesis takes place in all plant cells. d. photosynthesis can only take place where there are chloroplasts in the green portion of a plant. 18. what is the green pigment responsible for absorbing light in photosynthesis? a. chloroform b. chloride c. chlorophyll d. cauliflower 19. what is the energy cells use to carry out different processes? a. fadh₂ b. atp c. adp d. nadh

Explanation:

1. In photosynthesis, carbon - dioxide ($CO_2$) and water ($H_2O$) are used as reactants. So the answer is C.
2. Photosynthesis produces oxygen ($O_2$) and glucose ($C_6H_{12}O_6$), so the answer is D.
3. Cellular respiration occurs in the mitochondria. So the answer is A.
4. Most of the oxygen in the atmosphere is produced by photosynthesis. So the answer is C.
5. Photosynthesis requires light, so it can occur if light is present. The answer is A.
6. Photosynthesis can only take place where there are chloroplasts, usually in the green portion of a plant. Petals generally do not have chloroplasts, so no photosynthesis takes place in petals. The answer is D.
7. Chlorophyll is the green pigment responsible for absorbing light in photosynthesis. So the answer is C.
8. ATP is the energy - currency of the cell and is used to carry out different processes. So the answer is B.

Answer:

1. C. $CO_2$ & $H_2O$
2. D. $O_2$ & $C_6H_{12}O_6$
3. A. Mitochondria
4. C. Photosynthesis
5. A. True
6. D. Photosynthesis can only take place where there are chloroplasts in the green portion of a plant.
7. C. Chlorophyll
8. B. ATP