Science Group
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Science Group
Answer: Chloroplasts contain chlorophyll and are the site where photosynthesis takes place.
Answer: Glycolysis occurs in the cytoplasm and does not require oxygen.
Answer: Fats need more oxygen for oxidation, so their RQ is about 0.7, which is less than 1.
Answer: Chlorophyll is the green pigment that absorbs light energy used in photosynthesis.
Answer: Four ATP are produced but two are consumed, giving a net gain of two ATP per glucose.
Answer: Leaves contain most of the chloroplasts, making them the main site of photosynthesis.
Answer: Glycolysis converts glucose into two molecules of pyruvic acid (pyruvate).
Answer: Without enough oxygen, pyruvate is converted to lactic acid in muscle cells.
Answer: Oxygen is released as a by-product when water is split during the light reaction.
Answer: The Krebs cycle takes place in the mitochondrial matrix where pyruvate enters as acetyl-CoA.
Answer: Plants take in carbon dioxide, which is reduced to make glucose during photosynthesis.
Answer: The electron transport chain is embedded in the folded inner mitochondrial membrane.
Answer: Increased breathing after exercise supplies extra oxygen to clear accumulated lactic acid.
Answer: Aerobic respiration requires oxygen and produces more energy than anaerobic respiration.
Answer: Oxygen accepts electrons and hydrogen ions at the end of the electron transport chain.
Answer: Anaerobic respiration occurs without oxygen and yields less energy per glucose.
Answer: Decarboxylation reactions in the Krebs cycle release carbon dioxide.
Answer: The factor present in the least amount limits the rate of photosynthesis even if other factors are abundant.
Answer: Aerobic respiration oxidizes glucose completely to carbon dioxide and water, releasing energy.
Answer: Glycolysis, the Krebs cycle and the electron transport chain together produce about 36 to 38 ATP per glucose.