Respiration releases energy...
because it's fun
to build up larger molecules (proteins) from smaller molecules (amino acids)
to allow muscles to contract in animals
so animals can maintain a constant body temperature
so plants can build sugars, nitrates and other nutrients into amino acids where they are then built into proteins
so we can breathe
When doing physical activity, your breathing rate increases and you breathe more deeply for maximum oxygen intake to be supplied to your muscles
Your heart pumps faster during excercise so more blood and thus oxygen can be pumped to your muscles
Glycogen..
some glucose is stored from food as glycogen
glucose breaks down into glycogen
glycogen is mainly stored in the liver
muscles have their own store
muscles use glucose vigorously during exercise so some of the glucose stored as glycogen is reconverted back into glucose for respiration
glycogen combines with oxygen in respiration
Anaerobic respiration happens only when your asleep
Anaerobic respiration is the incomplete breakdown of glucose due to insufficient oxygen supply to your muscles, with the equation..
glucose -> lactic acid (+ a little energy)
glucose -> oxygen + lactic acid (+ a little energy)
glucose -> carbon dioxide + lactic acid (+ a little energy)
glucose -> lactic acid (+ a lot of energy)
"Oxygen debt" is when...
you have to "repay" the oxygen that you didn't get to your muscles during exercise because your lungs couldn't keep up with the demand
you don't have any oxygen in your bloodstream
when you're suffocating
when you have such little oxygen in your muscles that they cannot work any longer
lactic acid is removed by..
oxidising it to harmless CO2 and water
passing it out through the blood stream
breathing it out
waiting until your heartrate is normal
While high levels of CO2 and lactic acid are detected in the blood, your breathing and heart rate stay high to rectify the situation
mitochondria help make proteins by
provided the energy required for protein synthesis
where protein synthesis takes place
