Sbi4U - Practice Exam
SBI4U - Practice Exam
Part A: Multiple Choice
1. When organic molecules are joined together and a water molecule is removed, the reaction is called which of the following? A. Dehydration synthesis. B. Hydrogenation. C. Hydrolysis. D. Oxidation. What is a nucleotide composed of? A. Nitrogenous base, 6 carbon sugar and a phosphate group. B. Nitrogenous base, 5 carbon sugar and a phosphorus group. C. Nitrogenous base, 5 carbon sugar and a phosphate group. D. None of the above. Enzymes work as catalysts by doing which of the following? A. Decreasing the activation energy. B. Increasing the activation energy. C. Allostericallly controlling other proteins. D. Bypassing the need for a transition state to occur. Which of the following statements regarding cellular respiration is false? A. Pyruvate oxidation occurs in the mitochondrial matrix. B. Phosphofructokinase is an allosteric enzyme used to control the rate of aerobic respiration. C. 4 molecules of carbon dioxide are produced during the Krebs cycle. D. Substrate-level phosphorylation produces 2 ATP in glycolysis. Ethanol fermentation is the result of anaerobic respiration of what type of organism? A. Yeast. B. Bacteria. C. Plants. D. Animals. How many turns of the Calvin cycle are required to fix enough carbon dioxide to produce one glucose molecule? A. 1 B. 2 C. 3 D. 6 Acetyl-CoA is the final product of which stage of cellular respiration? A. Pyruvate oxidation. B. ETC. C. Krebs cycle. D. Glycolysis. Which statement is true regarding C4 photosynthesis? A. It involves the stomata opening at night and closing in the day. B. It occurs in cool, moist environments. C. It uses PEP carboxylase to fix CO2 in the mesophyll cells. D. It occurs in cacti and pineapples. Which statement regarding cellular respiration is false? A. In the last stage of glycolysis, 2 molecules of PEP are converted to 2 molecules of pyruvate. B. In the first stage of glycolysis, ATP phosphorylates glucose to glucose 6-phosphate (G6P). C. 1 ATP is
Part A: Multiple Choice
1. When organic molecules are joined together and a water molecule is removed, the reaction is called which of the following? A. Dehydration synthesis. B. Hydrogenation. C. Hydrolysis. D. Oxidation. What is a nucleotide composed of? A. Nitrogenous base, 6 carbon sugar and a phosphate group. B. Nitrogenous base, 5 carbon sugar and a phosphorus group. C. Nitrogenous base, 5 carbon sugar and a phosphate group. D. None of the above. Enzymes work as catalysts by doing which of the following? A. Decreasing the activation energy. B. Increasing the activation energy. C. Allostericallly controlling other proteins. D. Bypassing the need for a transition state to occur. Which of the following statements regarding cellular respiration is false? A. Pyruvate oxidation occurs in the mitochondrial matrix. B. Phosphofructokinase is an allosteric enzyme used to control the rate of aerobic respiration. C. 4 molecules of carbon dioxide are produced during the Krebs cycle. D. Substrate-level phosphorylation produces 2 ATP in glycolysis. Ethanol fermentation is the result of anaerobic respiration of what type of organism? A. Yeast. B. Bacteria. C. Plants. D. Animals. How many turns of the Calvin cycle are required to fix enough carbon dioxide to produce one glucose molecule? A. 1 B. 2 C. 3 D. 6 Acetyl-CoA is the final product of which stage of cellular respiration? A. Pyruvate oxidation. B. ETC. C. Krebs cycle. D. Glycolysis. Which statement is true regarding C4 photosynthesis? A. It involves the stomata opening at night and closing in the day. B. It occurs in cool, moist environments. C. It uses PEP carboxylase to fix CO2 in the mesophyll cells. D. It occurs in cacti and pineapples. Which statement regarding cellular respiration is false? A. In the last stage of glycolysis, 2 molecules of PEP are converted to 2 molecules of pyruvate. B. In the first stage of glycolysis, ATP phosphorylates glucose to glucose 6-phosphate (G6P). C. 1 ATP is