Tests for carbohydrates, proteins and fats
Biochemical tests · Biology
Study notes
School lab: Benedict's test turns your glucose solution brick-red on heating — the diabetes-urine test's cousin. Biuret test turns egg-white solution violet — protein proved in your breakfast. Grease-spot test: groundnut oil leaves a translucent stain on paper — fat proved without chemicals. Iodine on potato turns blue-black — starch in your aloo.