| Criteria / Topics | 0 | 2 | 4 | 6 | 8 | 10 |
|---|---|---|---|---|---|---|
| Tryptophan Repressor | The trp repressor, TrpR, is not mentioned. | The trp repressor, TrpR, is mentioned but not explained correctly. | The trp repressor, TrpR, is mentioned but with some errors in the explanation. | The trp repressor, TrpR, is mentioned and explained with minor errors. | The trp repressor, TrpR, is mentioned and explained correctly. | The trp repressor, TrpR, is mentioned and explained correctly with additional relevant details. |
| Attenuation | Attenuation is not mentioned. | Attenuation is mentioned but not explained correctly. | Attenuation is mentioned but with some errors in the explanation. | Attenuation is mentioned and explained with minor errors. | Attenuation is mentioned and explained correctly. | Attenuation is mentioned and explained correctly with additional relevant details. |
| Feedback Inhibition | Feedback inhibition is not mentioned. | Feedback inhibition is mentioned but not explained correctly. | Feedback inhibition is mentioned but with some errors in the explanation. | Feedback inhibition is mentioned and explained with minor errors. | Feedback inhibition is mentioned and explained correctly. | Feedback inhibition is mentioned and explained correctly with additional relevant details. |
| Other Mistakes | Other forms of regulation are mentioned with major errors. | Other forms of regulation are mentioned with some errors. | One other form of regulation is mentioned with minor errors. | One other form of regulation is mentioned with no errors. | Two other forms of regulation are mentioned with no errors. | No other forms of regulation other than TrpR, attenuation, or feedback inhibition are mentioned. |