Aerobic & Anaerobic respiration Flashcards
1
Q
What is respiration
A
- The process of transferring energy from glucose to the cells
- All cells in a living organism respire
2
Q
Where does respiration take place
A
- In the mitochondria
3
Q
What type of reaction is respiration
A
- Exothermic
4
Q
What are the 3 main uses of respiration
A
- Make larger molecules from smaller ones (proteins from amino acids)
- Use to contract muscles (so that animals can move)
- Enables mammals and birds to mantaon their body temperature
5
Q
Descripe a lipid molecule
A
- 1 molecule of glycerol
- 3 molecules of fatty acids
6
Q
What is the word equation for aerobic respiration
A
- Glucose + Oxygen —-> Carbon Dioxide + Water
7
Q
What is the symbol equation for aerobic respiration
A
- C6H12O6 + 6O2 —-> 6CO2 + 6H2O
8
Q
What is aerobic respiration
A
- Occurs when there is a plentiful supply of oxygen
- Involves the complete breakdown of glucose
- Most efficient way of transferring energy
9
Q
What is anaerobic respiration
A
- Occurs when there is not enough oxygen to oxidise the glucose
- Inly occurs in an emergency (doing exercise)
- Does not release a lot of energy
- Involces the incomplete breakdown of glucose
- Releases lactic acid
10
Q
What is the equation for anaerobic respiration in animals
A
Glucose —-> Lactic Acid
11
Q
What is the equation for anaerobic respiration in plants and yeast
A
Glucose —-> Ethanol + Carbon Dioxide
12
Q
How do organism get the required reactants for respiration
A
- Plants - get glucose through photosynthesis
- Plants - oxygen diffuses into the leaf via the stomata
- Animals - oxygen is obtained through the environment
- Animals - get glucose through food
13
Q
What is the use of the products of fermentation
A
- Ethanol - alcoholic drinks
- Carbon Dioxide - used to make bread rise
14
Q
What is metabolism
A
- The sum of all of the chemical reactions that take place in a living organism
15
Q
Name a molecule made from glucose in plants and one in animals
A
- Plants - cellulose (used to strenghthen cell walls)
- Animals - glycogen (storage molecule in animal cells)
