Biology U3 - Enzymes
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Biology U3 - Enzymes - Details
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17 questions
| 🇬🇧 | 🇬🇧 |
| Are changed and a new coenzyme must be used for every new reaction. | Coenzymes after a reaction |
| Globular proteins that lower the activation energy for (catalyse) certain chemical reactions. | Enzymes |
| Cool temperatures as there is less kinetic energy for particles to move. | Low enzyme activity cause |
| When substrates bind to an enzyme the shape is changed slightly to enhance efficiency (of to inhibit if it is a competitive inhibitor) | Induced fit theory |
| Increase in enzyme concentration; optimal temperature; optimal pH; increase in substrate concentration; decrease in inhibitor concentration | Increase in enzyme activity causes |
| Inorganic metallic ions that bind to an enzyme to increase catalysis rate (a type of cofactor) | Metal cations |
| A reaction that requires energy (endergonic). E.g. phosphorylation - ADP becomes ATP. | Anabolic reaction |
| Inhibitors that permanently bind to an enzyme's active site. Toxic to cells (e.g. nerve gases, toxins) | Irreversible inhibitors |
| An inhibitor prevents an enzyme from functioning as usual by binding to its active site, preventing a substrate from binding. | Competitive inhibition |
| An inhibitor prevents an enzyme from functioning as usual by binding to an allosteric site, preventing a substrate from binding by changing the shape of the active site. | Non-competitive inhibition |
| All active sites are constantly occupied, and some other factor is limiting rate of enzyme activity. | Saturation point |
| Are changed and a new coenzyme must be used for every new reaction. | Coenzymes after a reaction |