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5 Written questions

5 Matching questions

  1. pyruvate to acetyl-coa
  2. to break down 1 glucose molecule you need ___ NAD+ from inside & ____ NAD+ from outside mitochondria, ___ oxaloacetate, _____ ADP, and ____ of each enzyme
  3. which intermediates of the krebs cycle can be made into glucose?
  4. NAD+ vs. NAD: which is the better oxidizing agent? reducing agent?
  5. step 4
  1. a pyruvate + NAD+ + CoA-SH (coenzyme A) ----pyruvate dehydrogenase complex---> CH3C(=O)SCoA (acetyl coa) + NADH + CO2
  2. b 8 (2 from pyruvate to acetyl coa, 6 from krebs), 2 (glycolysis), 1, 4, 1
  3. c all of them
  4. d FAD, NAD+
  5. e 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+

5 Multiple choice questions

  1. it's normous and requires pantothenic acid, a water soluble vitamin, to make it
  2. inner mitochondrial matrix
  3. succinyl 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
  4. fats, ketone bodies, cholesterol (NOT glucose!)
  5. ATP, NADH, succinyl CoA

5 True/False questions

  1. FADflavin adenine dinucleotide, a biological oxidizing agent that is reduced to FADH2; comes from riboflavin


  2. how krebs differs from glycolysisinner mitochondrial matrix


  3. step 6citrate (6c) is isomerized to isocitrate (6c) with the help of aconitase


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


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