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1. In which of the following cell organelles does photosynthesis occur? a. ribosome b. chlorophyll c. chloroplast d. mitochondrion 2. How many molecule/s of carbon dioxide is/are released from one pyruvic acid molecule being oxidized? a. 1 b. 3 C. 2 d. 4 3. Which of the following substances is the origin of oxygen released as gas by green plants during photosynthesis? a. water C. carbon dioxide d. ribulose-1,5-biphosphate 4. How does the amount of light affect the rate of photosynthesis? a. As the intensity of light increases, the rate of photosynthesis also increases. b. In photosynthesis, the energy from the sun is used to turn oxygen and water into sugar. c. When the intensity of light is high, you will get a greater rate of photosynthesis and the rate has no limit. d. None of the above. 5. Pyruvate is the product of glycolysis. If there is no oxygen available to cells of the human body, what becomes of pyruvate? a. alcohol b. lactic acid C. CO2 d. A and C 6. How many molecules of carbon dioxide is/are released from one pyruvic acid? a. 1 b. 3 C. 2 d. 4 7. Which of the following scenario would happen if plants already used up ATP and NADPH at nigh? a. glucose production will stop c. less carbon dioxide will be used b. less oxygen will be produced d. H2O molecule will split to form electrons 8. Trace the path of sugar molecules found in the stem from where they are produced. a. Root → stem b. leaf → stem c. flowers → leaf → stem d. roots → leaf → stem 9. Which of the following is correctly matched? a. photosynthesis : catabolic process : respiration : anabolic b. photosynthesis : energy is trapped : respiration : energy is released c. photosynthesis : light is not essential : respiration : light is not essential d. photosynthesis : glucose is starting product : respiration : glucose is the end product 10. Which of the following is the BEST condition to consider by farmers to increase their vegetable harvest? a. the kind of soil b. the amount of water only c. location of the plots only d. all of the choices 1. Which of the following BEST explains why planting trees and putting trees and putting up urban gardens can help prevent global warming? a. Plants perform photosynthesis. b. Plants produce oxygen during daytime and perform transpiration. c. Plants absorb CO2 that contributes to the rising of earth's temperature. d. Plants use up carbon dioxide during photosynthesis, release oxygen to the environment, and perform transpiration.​