Respiration Flashcards
What is the purpose of respiration
The purpose of respiration is to release energy from food ( glucose)
Where does respiration take place
Respiration takes place in the mitochondria
Why is energy needed in the body
Energy is needed for
- Metabolism
- control of body temperature
- cell division
- muscle contractions
- growth and repair
What is the word equation for respiration
Glucose + oxygen —> ATP energy + carbon dioxide + water vapour
What is the chemical equation for respiration
C6H12O6 + 602 —> ATP energy +6CO2 + 6H20
What type of process is respiration
Respiration is an exothermic process as it gives out energy to its surroundings
How are mitochondria adapted for respiration
Mitochondria have a highly folded inner membrane which provides a big surface area that allows for more respiration.
Which cells have a lot of mitochondria
High energy demanding cells have lots of mitochondria so more respiration can take place to produce the energy needed
What sort of energy is produced during respiration
ATP energy .
One fully respired glucose molecule produces 38 molecules of ATP energy
What are the two different types of respiration
Anaerobic respiration
Aerobic respiration
What are the features of aerobic respiration
Formula: Glucose + Oxygen —>Water vapour + carbon dioxide + ATP energy
-Requires oxygen
-Glucose is fully broken down
-38 molecules of ATP energy are released
Occurs during everyday activities e.g walking
What are the features of Anaerobic respiration
Formula:Glucose —> lactic acid + ATP energy
-Does not require oxygen
-Glucose partially broken down
-Releases 2 molecules of ATP energy
Occurs during periods of vigorous exercise e.g 100m sprint
What is oxygen debt
Oxygen debt is the extra oxygen our body needs after exercise (anaerobic) to react with the accumulated lactic acid in our cells
Which other way (apart from oxygen) can lactic acid be broken down
Lactic acid can be removed by the blood and taken to the liver . In the liver the lactic acid is converted into glucose
What can a build up of lactic acid lead to
A build up of lactic acid can lead to cramps and fatigues
