A student is given two solutions. He wants to test if one contains protein and the other contains glucose.
Describe the two chemical tests he should use to identify each substance.
Different groups of organisms have cell walls made of different substances.
Complete the table to show an example from each group of organisms and the main chemical component of their cell wall.
| Group | Example from the group | Main chemical component of cell wall |
|---|---|---|
| plants | dandelion | [Box 1] |
| fungi | [Box 2] | [Box 3] |
| bacteria | Lactobacillus | [Box 4] |
21 exam-style questions on Edexcel IGCSE Biology Biological molecules. Each one has a worked solution and a mark scheme showing where the marks go.