BIOC0001 GLYCOLYSIS EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
what is glycolysis
first step in the breakdown of glycolysis
what is the product of glycolysis
pyruvate x 2 per molecule of glucose
glycolysis is the only way of producing ATP without ___________ or _______
mitochondria, oxygen
gylolysis doesn't require oxygen, occurs in the cytoplasm, what is this reaction
called from this information
anaerobic cytosolic reaction
what are the 3 sources of glucose for glycolysis
- glucose from digestion (fed state)
- glycogen (fasting state or exercise)
- gluconeogenesis (starvation)
what reactants does gluconeogenesis use
lactate, amino acids and glycerol
how is glycogen broken down (include enzymes)
, glycogen phosphorylase breaks chain down via PHOSPHOROLYSIS (not hydrolysis).
produces a 1-glucose phophate.
phosphoglucomutase will then transfer phosphate to a different carbon (C6) so it can be
used in glycolysis.
intermediates and enzymes in the preparation of glucose where ATP is involved
(3 intermediates)
glucose converted to glucose 6-P by hexokinase. hydrolysis of ATP to ADP
glucose 6-P converted to fructose 6-P by glucose phosphate isomerase.
fructose 6-P converted to fructose 1,6-bisP by phosphofructo-kinase. hydrolysis of ATP
to ADP.
what 2 molecules are made from fructose 1,6 bisphosphate - how is this
overcome?
fructose 1,6 bisphosphate is an uneven molecule.
broken down into glyceraldehyde 3-P and dihydroxyacetone phosphate by aldelase.
dihydroxyacetone then converted into glyceraldehyde 3-P by triose phosphate
isomerase.
from this point onwards all molecules are x2 per molecule of glucose
WITH COMPLETE SOLUTIONS VERIFIED
what is glycolysis
first step in the breakdown of glycolysis
what is the product of glycolysis
pyruvate x 2 per molecule of glucose
glycolysis is the only way of producing ATP without ___________ or _______
mitochondria, oxygen
gylolysis doesn't require oxygen, occurs in the cytoplasm, what is this reaction
called from this information
anaerobic cytosolic reaction
what are the 3 sources of glucose for glycolysis
- glucose from digestion (fed state)
- glycogen (fasting state or exercise)
- gluconeogenesis (starvation)
what reactants does gluconeogenesis use
lactate, amino acids and glycerol
how is glycogen broken down (include enzymes)
, glycogen phosphorylase breaks chain down via PHOSPHOROLYSIS (not hydrolysis).
produces a 1-glucose phophate.
phosphoglucomutase will then transfer phosphate to a different carbon (C6) so it can be
used in glycolysis.
intermediates and enzymes in the preparation of glucose where ATP is involved
(3 intermediates)
glucose converted to glucose 6-P by hexokinase. hydrolysis of ATP to ADP
glucose 6-P converted to fructose 6-P by glucose phosphate isomerase.
fructose 6-P converted to fructose 1,6-bisP by phosphofructo-kinase. hydrolysis of ATP
to ADP.
what 2 molecules are made from fructose 1,6 bisphosphate - how is this
overcome?
fructose 1,6 bisphosphate is an uneven molecule.
broken down into glyceraldehyde 3-P and dihydroxyacetone phosphate by aldelase.
dihydroxyacetone then converted into glyceraldehyde 3-P by triose phosphate
isomerase.
from this point onwards all molecules are x2 per molecule of glucose
