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5 Written questions

5 Matching questions

  1. step 7
  2. NAD+ vs. NAD: which is the better oxidizing agent? reducing agent?
  3. step 2
  4. step 6
  5. step 4
  1. a fumarate (4c) is transformed into malate (4c) with the help of fumarase, bringing in 1 molecule of H2O
  2. b FAD, NAD+
  3. c alpha-ketoglutarate (5c) is oxidized to form succinyl coA (4c) with the help of alpha-ketoglurate dehydrogenase complex, transforming NAD+ into NADH, bringing in CoA, and releasing CO2 and H+
  4. d succinate (4c) is oxidized into fumarate (4c) with the help of succinate dehydrogenase, transforming FAD into FADH2
  5. e citrate (6c) is isomerized to isocitrate (6c) with the help of aconitase

5 Multiple choice questions

  1. a 2-electron oxidizing agent that is reduced to NADH; comes from nicatinamide, or niacin
  2. its coenzymes include b-vitamins (water soluble) that act as recyclable prosthetic groups; it's the most irreversible reaction in our body/there's no getting around it, so once acetyl-CoA is made, you cannot go back
  3. pyruvate, fats, amino acids, ketone bodies
  4. all of them
  5. the conjugate base of citric acid; a tertiary ROH that is not easily oxidized (that's why it's isomerized in the cycle)

5 True/False questions

  1. how krebs differs from glycolysisinner mitochondrial matrix

          

  2. step 5succinyl CoA (4c) is transformed into succinate (4c) with the help of succinyl CoA synthetase, transforming GDP + Pi into GTP with the energy released from the C-S bond

          

  3. to break down 1 glucose molecule you need ___ NAD+ from inside & ____ NAD+ from outside mitochondria, ___ oxaloacetate, _____ ADP, and ____ of each enzyme8 (2 from pyruvate to acetyl coa, 6 from krebs), 2 (glycolysis), 1, 4, 1

          

  4. isocitratethe conjugate base of citric acid; a tertiary ROH that is not easily oxidized (that's why it's isomerized in the cycle)

          

  5. what can Acetyl-CoA be turned into?pyruvate, fats, amino acids, ketone bodies

          

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