AS Level Biology - Testing for biological molecules

**This Powerpoint specifically uses the Cambridge AS Level Biology Syllabus and covers all criteria for – Unit 2.1 Testing for biological molecules
**

Students will be able to -

1 describe and carry out the Benedict’s test for reducing sugars, the iodine test for starch, the emulsion test for lipids and the biuret test for proteins

2 describe and carry out a semi-quantitative Benedict’s test on a reducing sugar solution by standardising the test and using the results (time to first colour change or comparison to colour standards) to estimate the concentration

3 describe and carry out a test to identify the presence of non-reducing sugars, using acid hydrolysis and Benedict’s solution

**Every Powerpoint includes learning objectives, a starter and plenary, suitable activities and review questions with mark scheme. We also provide a FREE pdf version of the file so it can easily be printed for students as a handout or uploaded to the school VLE system
**

Bring your Cambridge AS Level Biology lessons to life with our expertly designed teaching resources. Each unit is tailored to the latest syllabus, offering ready-to-use lesson plans, engaging experiments, and visually clear notes that save hours of prep time. Whether you’re new to the course or refining your approach, The Science Shelf gives you everything you need to boost student understanding and exam success — all in one place.