Carbohydrate Metabolism
,Digestion and Absorption of Carbohydrates
2
, Stages of Metabolism
Catabolic reactions:
Stage 1: Digestion
and hydrolysis
break down large
molecules to smaller
ones that enter the
bloodstream.
Stage 2: Degradation
Further breaking and
some oxidation of
molecules to 2 & 3-
carbon compounds.
Stage 3: Oxidation
of small molecules to
CO2 & H2O in the citric
acid cycle and
electron transport
provides energy for
ATP synthesis. 3
, ATP Molecule & Energy
Each cell has about 1 billion ATP molecules that last for less than
one minute
Over half of the energy released from ATP is converted to heat
,Digestion and Absorption of Carbohydrates
2
, Stages of Metabolism
Catabolic reactions:
Stage 1: Digestion
and hydrolysis
break down large
molecules to smaller
ones that enter the
bloodstream.
Stage 2: Degradation
Further breaking and
some oxidation of
molecules to 2 & 3-
carbon compounds.
Stage 3: Oxidation
of small molecules to
CO2 & H2O in the citric
acid cycle and
electron transport
provides energy for
ATP synthesis. 3
, ATP Molecule & Energy
Each cell has about 1 billion ATP molecules that last for less than
one minute
Over half of the energy released from ATP is converted to heat
