aqa exam paper

Question 1

what are the 3 aerobic energy system stages

Answer 1

glycolysis
krebs cycle
ectron transport chain

Question 2

glyoloysis

Answer 2

glyocgen is broken down into pyruivc acid
ATP is then stored

krebs cycle-

Question 3

aerobic enregy system

Answer 3

glyocogen broken down into glucose (glyolsyis)
utilises x2atp
glucose broken down into pyruvic acid by enzyme pfk
then borkwn down into acetly co a
then taken into krebs cycle as citric acid
in krebs cycle,ydorgen ions are formed and co2
elctron transprt chain
hydogen ions oxidees

Question 4

atp-pc system

Answer 4

coupled reaction
atp broken down into adp plus pi by enzyme atpase
phosphocreatine broken down by enzyme creatine kinase into p plus c plus energy
used to reynthesise atp

Question 5

anaerobic glycotic system

Answer 5

glycogen broken down into glucose (glycolyisi)
glucose broken down into pyruvic acid by enzyme pfk
resynthesiese x4atp
pyrivuic acid broken down by enzyme ldh into lactic acid