Respiration Flashcards
1
Q
Why do we need energy?
A
- Movement.
- Keep warm.
- Chemical reactions to build larger molecules.
2
Q
What is the process in which we are supplied with energy?
A
- Cellular Respiration.
- Exothermic reaction.
- Takes place continually in all living cells.
3
Q
What is the equation for respiration?
A
- Glucose + Oxygen –> Carbon Dioxide + water.
4
Q
Why does aeorobic respiration releases a great deal of energy?
A
- Glucose molecules are fully oxidised.
5
Q
What happens if there is not enough oxygen?
A
- Anarobic respiratipn.
6
Q
Anaerobic respiration in muscle cells:
A
- Muscles need a great deal of energy for contraction.
- Under certain coniditons: Amount of oxygen may be limited.
- ## Shortage of oxygen: Muscle cells respire anaroebically.
7
Q
What is the equation for anaerobic respiration?
A
Glucose –> Lactic Acid.
- During Anaerobic respiration in muscles:
- Glucose is converted into lactic acid.
- Does not require oxygen.
- Releases less energy than aerobic respiration.
- Because:
- Oxidation of glucose is incomplete.
8
Q
Anaerobic respiration in plants and yeast cells:
A
- Glucose –> Ethanol + Carbon dioxide.
- Glucose is converted into ethanol and carbon dioxide.
- No oxygen is needed.
9
Q
What is anearobic respiration in yeast called?
A
- Fermentation.
- Reaction is used to make: Alcholic drinks and beer.
- Co2 in fermentation is useful to make bread.
- Creates bubbles in the dough causing the bread to rise.