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Glycolysis

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  • What are the end product of glycolysis?
    2 pyruvate, 2 ATP, 2 NADH
  • Where in the cell does glycolysis occur?
    Cytoplasm
  • The coenzymes that donate electrons to the ETC.
    NADH, FADH₂
  • What is the main purpose of glycolysis?
    Convert Glucose into Pyruvate and generate ATP
  • The first protein complex in the ETC that accepts electrons from NADH.
    Complex I (NADH dehydrogenase)
  • The enzyme responsible for the rate-limiting step of glycolysis; it converts fructose-6-phosphate into fructose-1,6-bisphosphate.
    Phosphofructokinase
  • The part of the mitochondrion where the electron transport chain occurs.
    Inner mitochondrial membrane
  • True or False: Triose phosphate isomerase converts Dihydroxyacetone phosphate (DHAP) to glyceraldehyde-3-phosphate (G3P)
    True
  • What molecule is formed from pyruvate during pyruvate oxidation?
    Acetyl-CoA
  • Which enzyme splits fructose-1,6-bisphosphate into two 3-carbon molecules?
    Aldolase
  • The main function of the Krebs cycle in cellular respiration.
    To produce NADH, FADH₂ for ATP generation
  • How many pyruvate molecules are produced from one glucose molecule in glycolysis?
    2
  • What happens to pyruvate under anaerobic conditions in human cells?
    It is converted into lactate
  • What are the products of pyruvate oxidation for each pyruvate molecule?
    1 Acetyl-CoA, 1 NADH, 1 CO₂
  • The cellular location where the Krebs cycle takes place.
    Mitochondrial matrix
  • The coenzyme reduced to FADH₂ during the conversion of succinate to fumarate.
    FAD
  • The 6-carbon compound formed when acetyl-CoA and oxaloacetate combine.
    Citrate
  • The process of converting glucose into two molecules of pyruvate
    Glycolysis
  • Which enzyme catalyzes the conversion of glucose-6-phosphate to fructose-6-phosphate? A. Hexokinase B. Phosphoglucose isomerase C. Aldolase D. Triose phosphate isomerase
    B
  • Which enzyme complex catalyzes pyruvate oxidation?
    Pyruvate dehydrogenase complex
  • The total number of carbon dioxide molecules released per turn of the Krebs cycle.
    2
  • The molecule that is regenerated at the end of the cycle to combine with acetyl-CoA again.
    Oxaloacetate
  • During glycolysis, Glyceraldehyde-3-phosphate dehydrogenase produces what compound?
    NADH
  • Which step in glycolysis consumes ATP? A. Conversion of glucose to glucose-6-phosphate B. Conversion of fructose-6-phosphate to fructose-1,6-bisphosphate C. Both A and B D. Conversion of phosphoenolpyruvate to pyruvate
    C
  • Which of the following is the first enzyme in glycolysis?
    Hexokinase
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