Chapter 11 - Respiration and gas exchange
- Created by: E456
- Created on: 06-03-17 11:37
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- The main nutrient used to provide energy in cells is glucose.
- respiration= a series of chemical reactions which happen in all living cells, in which food is broken down to release energy, usually by combining it with oxygen.
- aerobic respiration= the chemical reactions in cells that use oxygen to break down nutrient molecules to release energy.
- glucose + oxygen → carbon dioxide + water
- The balanced equation is: C6H12O6 → 6CO2 + 6H20
- Most of the steps in aerobic respiration take place inside mitochondria.
- anaerobic respiration= chemical reactions in cells that break down nutrient molecules to release energy, without using oxygen.
- Yeast, a single-celled fungus, can respire anaerobically; it breaks down glucose to alcohol.
- glucose → alcohol + carbon dioxide
- C6H12O6 → 2C2H5OH + 2CO2
- Your muscule cells make lactic acid= glucose → lactic acid
- Soda lime contains chemicals that absorb carbon dioxide.
- gas exchange= the exchange of gases across a respiratory surface; for example, oxygen is taken into…
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