KA8 Flashcards
What is Glycolysis?
Breakdown of glucose molecules into 2 molecules of pyruvate
What happens during Glycolysis
2 things produced
NADH is produced when hydrogen ions are passed to coenzyme NAD
During exercise the muscle cells don’t get enough oxygen to support what
Electron Transport chain
Then what happens under the conditions
Pyruvate (produced by glycolysis) is converted to lactate
What’s the equation then bruddah
Glucose—-> pyruvate —> lactate
What does the conversion of pyruvate include
The transfer of hydrogen from NADH ( produced during glycolysis) to pyruvate to produce lactate
What does that transfer do
Regenerates the NAD needed to maintain ATP production through Glycolysis
The oxygen debt is repaid when
The exercise is complete
What does completion of exercise mean
Allows respiration to provide energy to convert lactate back to pyruvate and glucose in the liver
Skelatol muscles
Muscles attached to the skeleton and make the body move
2 types of skelatol muscles
Slow twitched muscle fibres
Fast twitched mulscle fibres
Most human muscles tissues contain what a mixture of
Slow and fast twitched fibres
Athletes show distinctive muscle fibre patterns that reflect their sporting activities
Why are the 2 differnet type of fibres different
•Because they have different numbers of mitochondria
•blood supplies
•concentrations of O2 storing proteins myoglobin
Speed of muscle contraction
Slow = slow
Fast= quick
Length of time contraction lasts
Slow=Longer
Fast= shorter
Number of mitochondri
Many = slow
Few= fast
Blood supply
•large
•small
Conceentraioj
Higher
Lower
Main source of energy
Slow = fats
Fast= Glycogen
