1) What is the end product of Glycolysis? a) Acetyl-CoA b) Pyruvate c) Lactate d) Glucose-6-phosphate 2) What is the enzyme that converts glucose to glucose-6-phosphate? a) Pyruvate kinase b) Phosphofructokinase c) Enolase d) Hexokinase 3) How many ATP molecules are produced in the energy payoff phase of Glycolysis? a) 4 b) 2 c) 6 d) 8 4) What is the role of glyceraldehyde-3-phosphate dehydrogenase in glycolysis? a) Splits fructose-1,6-bisphosphate b) To produce  pyruvate c) Splits fructose-1, 6-bisphosphate d) Generates NADH by oxidizing glyceraldehyde-3-phosphate 5) What happen to pyruvate if oxygen available? a) Pyruvate reduce to ethanol b) Pyruvate remain unchanged  c) Pyruvate converted to lactate d) Pyruvate enter the mitochondria for the Krebs cycle  6) Oxygen is required for glycolysis to occur  a) True b) False 7) What is the second step of glycolysis? a) Glucose 6 – phosphate is rearranged to its isomer, fructose 6 – phosphate. b) Dihydroxyacetone phosphate (DHAP) is isomerized to glyceraldehyde 3 – phosphate. c) 2-phosphoglycerate is rearranged to phosphoenolpyruvate (PEP) by removal of a water molecule. d) Glyceraldehyde 3-phosphate is oxidized, by transfer its electrons to NAD+ 8) What is the net production of ATP, NADH and pyruvate from one molecule of glucose in glycolysis? a) 2 ATP, 2 NADH, 2 molecule pyruvate b) 2 ATP, 2 NADH, 1 molecule pyruvate c) 4 ATP, 2 NADH, 1 molecule pyruvate d) 4 ATP, 6 NADH, 2 molecule pyruvate 9) What happen to pyruvate in anaerobic conditions in animal cell? a) pyruvate oxidized to axeryl-CoA b) pyruvate converted to ethanol c) pyruvate converted to lactate d) pyruvate enters the Krebs cycle 10) Which of the following are the two main types of ATP production in cells? a) Oxidative phosphorylation and glycolysis b) Substrate-level phosphorylation and oxidative phosphorylation c) Substrate-level phosphorylation and photophosphorylation d) Chemiosmosis and glycolysis 11) Where Glycolysis, Krebs cycle and Electron transport chain takes place? a) Glycolysis - cytoplasm, Krebs cycle - inner membrane of mitochondria, Electron transport chain - matrix of mitochondria  b) Glycolysis - inner membrane of mitochondria, Krebs cycle - matrix of mitochondria, Electron transport chain - cytoplasm c) Glycolysis - matrix of mitochondria, Krebs cycle cytoplasm, Electron transport chain - inner membrane of mitochondria d) Glycolysis - cytoplasm, Krebs cycle - matrix of mitochondria  12) Which of the following are the oxidizing agents involved in the process below? a) Glycolysis- NAD+ , Krebs cycle- NAD+,FAD , Electron Transport- O2   b) Glycolysis- FAD , Krebs cycle- NADPH, Electron transport chain- O2  13) During glycolysis, what is the role of NAD+ in the oxidation of glyceraldehyde-3-phosphate? a) NAD+ acts as an electron donor. b) NAD+ accepts electrons and is reduced to NADH. c) NAD+ is not involved in this step. d) NAD+ is converted into ATP in this reaction.

Cellular Respiration: Glycolysis

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