Response to exercise/metabolism - bioenergetics - biology Flashcards
why does your heart rate, breathing rate and breath volume increase during exercise?
in order for your body to supply the muscles with more oxygenated blood
Why is there a build-up of lactic acid in our body?
due to the incomplete oxidation of glucose
What happens to muscles during long intense activities?
They become fatigued and are unable to contract efficiently
How does lactic acid convert back to glucose?
lactic acid in our blood from muscles is transferred into the liver where it reacts with oxygen before reforming glucose.
What is the ‘oxygen debt’?
It is the extra oxygen the body needs to react with the accumulated lactic acid and remove it from our cells
What is the effect of exercise on our body?
increased heart and breathing rate
What do small glucose molecules join together to form?
Glycogen, starch and cellulose
What are lipid molecules made from?
one molecule of glycerol and three fatty acids
What does glucose combine with to make amino acids?
it combines with nitrate ions to make amino acids that are then made to protein
Where is glucose broken down in?
Respiration
What does the breakdown of excess proteins form?
amino acids that can be converted into fat
