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SLS Bio 12 Enzyme SJ
| Term | Definition |
|---|---|
| activation energy | The amount of energy (joules) that is needed to convert all the molecules in one mole of a reacting substance from a ground state to the transition state |
| biochemical reaction | produced by or involving chemical reactions in living organisms |
| enzyme concentration | how much enzyme in a given solution |
| coenzyme | A small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes |
| competitive inhibitor | inhibitor that occupies the active site of an enzyme or the binding Site of a receptor and prevents the normal substrate or ligand from binding. |
| enzyme | Enzymes are proteinic in structure and have catalytic functions |
| enzyme activity | the catalytic effect exerted by an enzyme, expressed as units per milligram of enzyme or as molecules of substrate transformed per minute per molecule of enzyme |
| heavy metal | A metal of relatively high density or of high relative atomic weight |
| induced fit model | describes that only the proper substrate is capable of inducing the proper alignment of the active site that will enable the enzyme to perform its function. It suggests that the active site continues to change until the substrate is completely bound to it |
| metabolism | The process involving a set of chemical reactions that modifies a molecule into another for storage, or for immediate use in another reaction or as a by product. |
| non-competitve inhibitor | An inhibitory effect on a metabolic function, such as an enzyme, not based on competition for the binding site of the naturally occurring substrate, but on a different effect on the molecule whose function is being inhibited. |
| pH | a figure expressing the acidity or alkalinity of a solution on a logarithmic scale on which 7 is neutral, lower values are more acid, and higher values more alkaline |
| substrate | The substance acted upon by an enzyme |
| substrate concentration | is the concentration of the molecules an enzyme works on |
| thyroid | A butterfly-shaped endocrine gland in the neck that is found on both sides of the trachea. |
| thyroxin | secreted by the thyroid gland, controlling the rate of metabolism |
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sjackson2
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