Energy Metabolism
- Total sum of reactions within the body
o Catabolism – breaking down fuel (e.g. food) into simple molecules
o Anabolism – building up complex molecules
- Metabolism creates energy required
o for chemical reactions (e.g. for cell maintenance, division, death)
o To maintain body temperature
o To perform work (e.g. movement)
- the bonds are broken down in a lipid molecule to create carbon dioxide and water - this
releases energy from within the body
- the energy that is released is in the form of ATP
- Green arrows →
anabolic process
- Red arrows →
catabolic process
, Glycolysis (cellular respiration)
TCA/Citric acid/Kreb’s cycle
- Acetyl CoA enters this cycle
- Series of chemical reactions
- In mitochondrial matrix
- Products:
o Reduced NAD/FAD
o 2 ATP
o CO2
o H+
- Total sum of reactions within the body
o Catabolism – breaking down fuel (e.g. food) into simple molecules
o Anabolism – building up complex molecules
- Metabolism creates energy required
o for chemical reactions (e.g. for cell maintenance, division, death)
o To maintain body temperature
o To perform work (e.g. movement)
- the bonds are broken down in a lipid molecule to create carbon dioxide and water - this
releases energy from within the body
- the energy that is released is in the form of ATP
- Green arrows →
anabolic process
- Red arrows →
catabolic process
, Glycolysis (cellular respiration)
TCA/Citric acid/Kreb’s cycle
- Acetyl CoA enters this cycle
- Series of chemical reactions
- In mitochondrial matrix
- Products:
o Reduced NAD/FAD
o 2 ATP
o CO2
o H+
