Organisms that maintain life activities,has a variety of active substances. Some of these must be ingested through food. Do experiment to find out active substance contained and the process that produces the best results.
- Evaluation Indicators
1. Experiments designed appropriately for the limited material did.
2. There may be an error in the experiment that did understand and perform experiments.
3. Correctly interpret the results did , draw conclusions.
- Problems related words : bio – active substances , oxidation – reduction reactions , quantitative , experimental design.