Topic 4: Biological molecules and Food tests

List the three chemical elements that make up carbohydrates.

Which chemical element is found in all proteins but is absent in carbohydrates and lipids?

Identify the monomers that combine to form proteins.

Identify the monomer that combines to form starch.

State the two types of molecules that combine to form fats and oils.

____ _____ & ________

State the reagent used to test for the presence of starch in a food sample.

Describe the color change observed in a Benedict's test when only traces of reducing sugar are present in the food being tested.

• • Blue to green

• Blue to brick-red

• Blue to purple

• Colorless to white

State the reagent used in the test for vitamin C.

_____ solution.

State the reagent used to test for the presence of proteins in a food sample.

______ reagent.

State the test used to detect the presence of fats and oils in a food sample.

_______ ________ test.