CIE A level Biology - Energy and
respiration Study Guide
Features of ATP that make it suitable as the universal energy currency - Answer -Small and
water soluble so is easily transported around the cell
-releases small manageable quantities of energy
-easily hydrolysed (only requires one bond to break)
The need for energy in living organisms - Answer -Anabolic reactions : protein synthesis form
amino acids
-Active transport
-Muscle contraction
-Maintenance of body temperature in endotherms
Synthesis of ATP - Answer -Oxidative phosphorylation
-Substrate phosphorylation
The need for ATP - Answer -ATP is used as an energy currency within cells
-Complete oxidation of glucose yields +2870 KJ and this would be wasteful unless it is converted
to ATP
Roles of coenzymes NAD, FAD and coenzyme A in respiration - Answer used as electron
transporters and coenzyme A is the carrier of acetyl group from link reaction to Krebs cycle
Where does glycolysis take place - Answer Cytoplasm
Where does the link reaction take place - Answer Matrix of mitochondria
Where does the Krebs cycle take place - Answer Matrix of mitochondria
Where does oxidative phosphorylation take place - Answer Inner membrane of mitochondria
Glycolysis - Answer The phosphorylation and subsequent splitting of glucose into 2
molecules of pyruvate
respiration Study Guide
Features of ATP that make it suitable as the universal energy currency - Answer -Small and
water soluble so is easily transported around the cell
-releases small manageable quantities of energy
-easily hydrolysed (only requires one bond to break)
The need for energy in living organisms - Answer -Anabolic reactions : protein synthesis form
amino acids
-Active transport
-Muscle contraction
-Maintenance of body temperature in endotherms
Synthesis of ATP - Answer -Oxidative phosphorylation
-Substrate phosphorylation
The need for ATP - Answer -ATP is used as an energy currency within cells
-Complete oxidation of glucose yields +2870 KJ and this would be wasteful unless it is converted
to ATP
Roles of coenzymes NAD, FAD and coenzyme A in respiration - Answer used as electron
transporters and coenzyme A is the carrier of acetyl group from link reaction to Krebs cycle
Where does glycolysis take place - Answer Cytoplasm
Where does the link reaction take place - Answer Matrix of mitochondria
Where does the Krebs cycle take place - Answer Matrix of mitochondria
Where does oxidative phosphorylation take place - Answer Inner membrane of mitochondria
Glycolysis - Answer The phosphorylation and subsequent splitting of glucose into 2
molecules of pyruvate
