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12. (i) Explain briefly what is meant by respiration - Leaving Cert Biology - Question 12 - 2007
Question 12
12. (i) Explain briefly what is meant by respiration. Respiration is the biochemical process through which living organisms convert food, particularly carbohydrates... show full transcript
Worked Solution & Example Answer:12. (i) Explain briefly what is meant by respiration - Leaving Cert Biology - Question 12 - 2007
Step 1
(i) Explain briefly what is meant by respiration.
Answer
Respiration is the biochemical process in living organisms where glucose and oxygen are used to produce energy, along with carbon dioxide and water as byproducts. This vital process powers cellular activities and is essential for life.
Step 2
(ii) Distinguish between aerobic and anaerobic respiration.
Answer
Aerobic respiration takes place in the presence of oxygen, resulting in the complete breakdown of glucose into carbon dioxide and water, yielding a high amount of energy. In contrast, anaerobic respiration occurs without oxygen, resulting in the incomplete breakdown of glucose and producing less energy along with byproducts like lactic acid or ethanol.
Step 3
(i) Copy the table below into your answer book and complete the final column.
Answer
| Type of respiration | Energy Source | End products |
|---|---|---|
| Aerobic respiration | Glucose | Carbon Dioxide/Water/ATP |
| Anaerobic respiration in muscle | Glucose | Lactic Acid |
| Anaerobic respiration in yeast | Glucose | Alcohol/Carbon Dioxide/ATP |
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