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5 Written Questions

5 Matching Questions

  1. which intermediates of the krebs cycle can be made into glucose?
  2. to break down 1 glucose molecule you need ___ NAD+ from inside & ____ NAD+ from outside mitochondria, ___ oxaloacetate, _____ ADP, and ____ of each enzyme
  3. where does it take place?
  4. step 8
  5. what kinds of things inhibit the enzymes at the control points?
  1. a inner mitochondrial matrix
  2. b all of them
  3. c ATP, NADH, succinyl CoA
  4. d 8 (2 from pyruvate to acetyl coa, 6 from krebs), 2 (glycolysis), 1, 4, 1
  5. e malate (4c) is oxidized into oxaloacetate with the help of malate dehydrogenase, transforming NAD+ into NADH and releasing H+

5 Multiple Choice Questions

  1. fats, ketone bodies, cholesterol (NOT glucose!)
  2. it's normous and requires pantothenic acid, a water soluble vitamin, to make it
  3. a 2-electron oxidizing agent that is reduced to NADH; comes from nicatinamide, or niacin
  4. a secondary alcohol that is oxidized to a ketone (alpha-kg)
  5. flavin adenine dinucleotide, a biological oxidizing agent that is reduced to FADH2; comes from riboflavin

5 True/False Questions

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

          

  2. what is citrate?a secondary alcohol that is oxidized to a ketone (alpha-kg)

          

  3. step 2citrate (6c) is isomerized to isocitrate (6c) with the help of aconitase

          

  4. step 3isocitrate (6c) is oxidized to form alpha-ketoglutarate (5c) with the help of isocitrate dehydrogenase, transforming NAD+ into NADH and releasing H+ and CO2

          

  5. how krebs differs from glycolysisno reversal needed, no quick mechanism for NAD+ regeneration (too oxidative), more acetyl-CoA available

          

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