List the four main types of bio-molecules found in living organisms.

What are the basic building blocks (monomers) of proteins?

Name the chemical elements that are always present in (a) carbohydrates and (b) proteins.

A student wants to test a food sample for the presence of glucose. Name the reagent she should use and the expected positive result.

What is the function of starch in plants and glycogen in animals?

Define what an enzyme is and state which category of bio-molecule it belongs to.

State the positive test result (reagent and color change) for the presence of starch.

Explain why water is considered a good solvent for life processes.

Name the mineral deficiency that leads to anaemia in humans.

What is the main function of lipids in the body?

Give one example each of a monosaccharide, a disaccharide, and a polysaccharide.

A lack of Vitamin C in the diet can lead to a disease. What is the name of this disease and what is its main symptom?

What is the key difference between the elemental composition of lipids and nucleic acids?

How would you test a sample of groundnuts to show it contains lipids?

State the two main types of nucleic acids found in living cells.