Biology 9700/13 May June 2021 | Cambridge AS Level Past Papers With Mark Scheme
- Investigation of biological molecules: protein, starch, reducing sugar.
- Use of reagents: copper sulfate, potassium hydroxide, iodine, Benedict’s solution.
- Testing procedures for protein, reducing sugar, and starch in unknown solutions S1, S2, S3, S4, and mixture U.
- Identification of biological molecules present in solutions based on color changes.
- Microscopy techniques: observation of plant leaf sections, identification of palisade layer, and cellular structures.
- Analysis of xerophytic features in plant adaptations and vascular tissue differences.
باز نشر محتواها در فضای مجازی، ممنوع است.

باز نشر محتواها در فضای مجازی، ممنوع است.