4.4.2.1 Aerobic and Anaerobic Respiration Flashcards
1
Q
What is respiration?
A
- process of transferring energy from glucose, which goes on in every cell
- all living things respire
2
Q
What type of reaction is respiration?
A
- exothermic
- transfers energy to surroundings
3
Q
What are three examples of how organisms use energy transferred by respiration?
A
- to build up larger molecules from smaller ones
- in animals, allows muscles to contract
- in mammals and birds, used to keep body temperature steady in colder surrounding
4
Q
What is aerobic respiration?
A
- respiration using oxygen
- most efficient
5
Q
What is the word equation for aerobic respiration?
A
- glucose + oxygen -> carbon dioxide + water
6
Q
What is the symbol equation for aerobic respiration?
A
- C6H12O6 + 6O2 -> 6CO2 + 6H2O
7
Q
What is anaerobic respiration?
A
- respiration without oxygen
- incomplete breakdown of glucose
8
Q
What is the word equation for anaerobic respiration in animals?
A
- glucose -> lactic acid
9
Q
What are the differences with anaerobic respiration compared to aerobic?
A
- doesn’t transfer as much energy as glucose isn’t fully oxidised
- only useful in emergencies
10
Q
What is the word equation for anaerobic respiration in plants?
A
- glucose -> ethanol + carbon dioxide
11
Q
What is anaerobic respiration in yeast cells called?
A
- fermentation
12
Q
What is fermentation good for?
A
- used to make bread and alcohol
- carbon dioxide makes bread rise
- fermentation produces alcohol for beer and wine
