Question

A friend shows you a picture of a biomolecule test re sult. How would you know what test was performed with this one picture?

Answer 1

One can make an assumption of which test of biomolecule (carbohydrates, lipids, proteins, or nucleic acids) is been peformed by seeing the end-result if the colour, odour or any physical characteristic of the test obtained is the characteristics of that particular biomolecule test. This assumption can be more acurate if the viewer knows which ingredients (test samples, reagents, indicator, etc) are used to perform the shown test.

For examples:  Benedicts solution causes sugars/carbohydrate to turn green, yellow, orange or red when heated to boiling; or a Lugol’s iodine causes a solution containing starch to turn dark blue to black; or Large amounts of concentrated lipid leave translucent stain on paper after drying; or that Biuret solution causes protein solution to turn pink or violet.