link reaction

• what happens after glycolysis if oxygen is present


  the 3C pyruvate will diffuse into the mitochondrial matrix
• what does the link cycle start with and where


  it starts with pyruvate (3C) in the cytoplasm
• how will pyruvate enter the mitochondrion


  by facilitated diffusion though specific intrinsic carrier proteins
• what happens to the pyruvate (3C) once it has diffused into the cytoplasm


  pyruvate is decarboxylated and then dehydrogenated(or oxidised) to produce acetate and reduced nad
• what happens when pyruvate is decarboxylated


  one molecule of CO2 will be removed
• what happens when pyruvate is dehydrogenated


  hydrogen is removed then accepted by NAD to produce reduced NAD
• what is needed for pyruvate to be dehydrogenated


  dehydrogenase enzymes/e3
• what will the pyruvate be converted into after it is both decarboxylated and dehydrogenated


  to acetic acid (2C)
• what happens in the link reaction once acetic acid 2C is formed


  the acetic acid (2C) will combine with coenzyme A to form acetyl coenzyme A
• if six molecules of glucose enter glycolysis an are oxides how many acetate molecules would be produced at the end of the link reaction


  12
• why is it an advantage to have pyruvate as an intermediate compound in respiration


  there are carrier proteins to transport pyruvate into the mitochondrion
• what is the role of co-enzyme A


  to transport acetate(2C) to the Krebs cycle
• per glucose molecules how much reduced NAD is produced in the link reaction


  2
• per glucose molecule how much co2 is produced in the link reaction


  2