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5 Written questions

5 Matching questions

  1. step 7
  2. step 6
  3. what can Acetyl-CoA be turned into?
  4. step 3
  5. to break down 1 glucose molecule you need ___ NAD+ from inside & ____ NAD+ from outside mitochondria, ___ oxaloacetate, _____ ADP, and ____ of each enzyme
  1. a fumarate (4c) is transformed into malate (4c) with the help of fumarase, bringing in 1 molecule of H2O
  2. b fats, ketone bodies, cholesterol (NOT glucose!)
  3. c succinate (4c) is oxidized into fumarate (4c) with the help of succinate dehydrogenase, transforming FAD into FADH2
  4. d isocitrate (6c) is oxidized to form alpha-ketoglutarate (5c) with the help of isocitrate dehydrogenase, transforming NAD+ into NADH and releasing H+ and CO2
  5. e 8 (2 from pyruvate to acetyl coa, 6 from krebs), 2 (glycolysis), 1, 4, 1

5 Multiple choice questions

  1. citrate (6c) is isomerized to isocitrate (6c) with the help of aconitase
  2. pyruvate, fats, amino acids, ketone bodies
  3. pyruvate + NAD+ + CoA-SH (coenzyme A) ----pyruvate dehydrogenase complex---> CH3C(=O)SCoA (acetyl coa) + NADH + CO2
  4. 4 (3 within, 1 outside)
  5. it's normous and requires pantothenic acid, a water soluble vitamin, to make it

5 True/False questions

  1. step 8malate (4c) is oxidized into oxaloacetate with the help of malate dehydrogenase, transforming NAD+ into NADH and releasing H+

          

  2. NAD+ vs. NAD: which is the better oxidizing agent? reducing agent?pyruvate, fats, amino acids, ketone bodies

          

  3. step 1succinate (4c) is oxidized into fumarate (4c) with the help of succinate dehydrogenase, transforming FAD into FADH2

          

  4. what kinds of things inhibit the enzymes at the control points?ATP, NADH, succinyl CoA

          

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

          

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