phosphorylation in glycolysis

Cards (7)

  • what type of sugar is glucose, an what is it's significance in phosphorylation?
    Glucose is a hexose sugar, which means it contains six carbon atoms. its molecules are stable and need to be activated before they can be split into two three carbon compounds.
  • what is the first step in phosphorylation ?
    One molecule of ATP is hydrolysed and the released phosphoryl group is added to glucose to make hexose monophosphate
  • what is the second step to phosphorylation of glucose?
    another molecule of ATP is hydrolysed and the phosphryl group is added to the hexose phosphate to form a molecule of hexose bisphosphate. this sugar has one phosphate group at carbon atom number 1 and another at the sixth carbon
  • Each molcule of hexose bisphosphate is split into two three carbon molecules called triosephosphat e which each have a phosphate group.
  • What is the first step in triose phosphate oxidising into pyruvate?
    dehydrogenase enzymes, aided by the coenzyme NAD, remove hydrogens from the triose phosphate molecules
  • What is the first step in triose phosphate oxidising into pyruvate?
    The two molecules of NAD accept the hydrogen atoms, and become reduced.
  • What is the first step in triose phosphate oxidising into pyruvate?
    At this stage of glycolysis, two molecules of NAD are reduced for every molecule of glucose that under go this process. also, at this stage four molecules of ATP are made for every two triose phosphate molecules that are getting oxidised.