B9 Respiration Flashcards
What is respiration
It is the process of transferring energy from glucose which goes on in every cell
Is respiration endothermic or exothermic
Exothermic
Equation for aerobic respiration
Glucose + oxygen = carbon dioxide + water
Equation for anaerobic respiration
Glucose = lactic acid
Equation for Anaerobic respiration in Plants and yeast
Glucose = ethanol + carbon dioxide
What is metabolism
The sum of all the reactions in a cell or body
What is anaerobic respiration in yeast cells caled
Fermenation. It is used to manufacture bread and alcohol
What is anaerobic respiration
Incomplete breakdown of glucose making a lactic acid, because there is not enough oxygen for the body
What is an oxygen debt
The amount of extra oxygen your body needs to react with the build up of lactic acid and remove it from the cells
Aerobic respiration chemical equation
C6H12O6 + 6O2 = 6CO2 + 6H2O
How to measure breathing rate
Count number of breaths in a certain time
How to measure heart rate
Take the pulse and calculate how many beats per minute
Where does respiration occur
Mitochondria
Examples of metabolic reactions
- conversion of glucose to starch, glycogen and cellulose
- the formation of lipid molecules from a molecule of glycerol and three molecules of fatty acids
- the use of glucose and nitrate ions to form amino acids which in turn are used to synthesise proteins
- respiration
- breakdown of excess proteins to form urea for excretion.
Why do organisms need energy
Movement, keeping warm, chemical reactions to build larger molecules
