Term
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Definition
| enzyme-catalysed sequence of chemical reactions in a cell |
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Term
| reversible, irreversible & alternative routes |
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Definition
| types of steps that can be involved in a metabolic pathway |
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Term
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Definition
| metabolic reactions that build up small molecules into larger molecules and require energy |
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Term
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Definition
| metabolic reactions that break down large molecules into smaller molecules and release energy |
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Term
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Definition
| change to an enzyme’s active site to better fit the substrate after it binds to the enzyme |
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Term
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Definition
| chemical attraction between molecules |
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Term
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Definition
| substance that has a high affinity for the active site |
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Term
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Definition
| substance that has a low affinity for the active site |
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Term
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Definition
| region on an enzyme molecule where the substrate binds |
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Term
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Definition
| input of energy required to start a chemical reaction; lowered by enzymes |
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Term
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Definition
| enzyme inhibition by a substance that is similar to the substrate and so can fit the enzyme’s active site; can be reversed by increasing substrate concentration |
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Term
| non-competitive inhibition |
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Definition
| enzyme inhibition by a substance that permanently alters the enzyme’s active site when it binds away from the active site; cannot be reversed by increasing substrate concentration |
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Term
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Definition
| when an end-product of a metabolic pathway inhibits an enzyme earlier in the pathway and prevents production of the end-product |
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