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Distinguish between catabolic and anabolic processes.
In HKDSE Biology examination, you have to clearly define metabolism, catabolism and anabolism 🤔 Don't mix them up ❗️ ❕
Metabolism
- Catabolism ➕ Anabolsim ➡️ Metabolism
- Metabolism is all the chemical reaction take place in cell.
Catabolism
👆🏻This photo showing catabolism is the break down process.
- Catabolism is an enzyme catalysed reaction in which large molecules are being broken down or degraded.
- Energy will be released in catabolism and conserved as ATP.
📒 Catabolism example
- In respiration, glucose and oxygen react to form carbon dioxide and water.
- In cell, hydroxide peroxide will decompose into water and oxygen.
Anabolism
👆🏻This photo showing anabolsim is the build up process.
- Anabolism is an enzyme catalysed reaction in which simple molecules are synthesised into complex molecules.
- Energy is required in anabolism which is ATP released in catabolism.
📒 Anabolism example
- Monosaccharides combine to form disaccharides.
- Amino acids combine to form dipeptides.
- Glycerol and fatty acid combine to form lipid.
- In photosynthesis, carbon dioxide and water react to form glucose and oxygen.
In HKDSE Biology examination, you have to classify the chemical reaction whether is catabolism (break down) or anabolism (build up) ❗️ ❕
👆🏻This photo showing catabolism generating energy (ATP) which will be utilised in anabolism.
That's the end of this topic 👏🏻
References
- Kornberg, H. (2020, March 13). Metabolism. Retrieved from https://www.britannica.com/science/metabolism
- The Editors of Encyclopaedia Britannica. (2019, July 12). Catabolism. Retrieved from https://www.britannica.com/science/catabolism
- The Editors of Encyclopaedia Britannica. (2019, July 12). Anabolism. Retrieved from https://www.britannica.com/science/anabolism
- Helmenstine, A. M. (2020, February 4). How Anabolism and Catabolism Work Together for Metabolism. Retrieved from https://www.thoughtco.com/anabolism-catabolism-definition-examples-4178390