Respiration Flashcards
How does aerobic respiration happen in the cells
Glucose+oxygen-carbon dioxide+water
Oxygen and glucose react glucose molecules broken down to release energy
Oxygen and glucose are carried to body’s cells so energy is released through aerobic respiration
What molecule is energy from respiration locked up in
ATP molecule
It is needed when the cell requires energy to be released
When a person exercises why do breathing and pulse rates increase
To deliver oxygen to the cells in muscles quicker
To remove carbon dioxide produced in respiration quicker
Recovery rate
Measure heart rate immediately after exercise
Measure every minute until returns to normal
When does anaerobic respiration occur
What happens in regards to energy released and why is this the case
In the absence of oxygen: muscles working so hard not enough oxygen to break down available glucose (aerobic respiration)
Small amount of energy released through incomplete breakdown of glucose
In anaerobic respiration why do people feel cramps and fatigue
Lactic acid is produced in anaerobic respiration and is quite toxic to cells
Why is anaerobic respiration more suited to short bursts of exercise eg.100m sprint
Incomplete breakdown of glucose so much less energy released compared to aerobic respiration
However it produces the energy much faster until fatigue sets in
To break down lactic acid after anearobic, how does the body recover
Heart rate stays high- pumping blood through muscles to remove lactic acid and transport it to the liver to be broken dow
Deep breathing- ensuring oxidation of lactic acid to repay oxygen debt
What is the sum of the chemical reactions of the body called
Metabolic rate
Where is energy from respiration locked up in
A molecule called ATP
Energy is released when needed
What does respiratory quotient measure
What does this determine
The ratio between the oxygen taken in by an organism and the carbon dioxide it gives out
This determines which type of molecule is being respired in an organism
