Respiration Flashcards
What is cell respiration ?
The process of breaking down food molecules to release stored chemical energy
What is aerobic respiration ?
The respiration using oxygen to breakdown glucose and release energy
What is the equation for aerobic respiration ?
Glucose + Oxygen => Carbon dioxide + water + (energy)
What is the chemical equation for aerobic respiration ?
C6H12O6 + 6O2 => 6CO2 + 6H2O
Why does aerobic respiration release a lot of energy ?
Because it completely oxidises the glucose
What is anaerobic respiration ?
The respiration without oxygen
Why is less energy released during anaerobic respiration ?
Because glucose isn’t completely broken down
What is an advantage of anaerobic respiration ?
It allows cells to obtain a small amount of usable energy even when oxygen supply is limited
Equation for anaerobic respiration in animals
Glucose => lactic acid
Equation for anaerobic respiration in fungi and plants
Glucose => ethanol + carbon dioxide
What provides an additional energy source during intense exercise ?
The glycogen stored in muscle cells is broken down into glucose. This is respired anaerobically
What causes cramps ?
Build up of lactic acid from anaerobic respiration
Why is lactic acid transported to the liver where it is oxidised ?
In high concentrations lactic acid is toxic
Why do we keep breathing after exercise?
To oxidise lactic acid this uses oxygen, we keep breathing after exercise to supply the extra oxygen need to dispose of the lactic acid in our bodies
What is oxygen debt ?
The volume of oxygen needed to oxidise the lactic acid
