Tests for biological molecules

Combined science

Biological molecules

Obtaining the elements needed to make biological molecules

Enzymes: function, structure and specificity

Effects of substrate concentration and temperature on rate of enzyme activity

The effect of pH on the rate of an enzyme reaction: plan

The effect of pH on the rate of an enzyme reaction: practical

The effect of pH on the rate of an enzyme reaction: data analysis

Pupils will learn how substances essential for chemical reactions, and the products of the reactions, are transported into, around and out of the human body.

Pupils learned about differences in the cell structures of eukaryotic and prokaryotic organisms.

This unit explores the roles of sugars, amino acids, and fatty acids in the synthesis and breakdown of biological molecules. It covers enzyme action, transport in organisms, hypothesis development, and data interpretation. Emphasis is on planning experiments and presenting explanations.

Biological molecules and enzymes

Physical activity and equipment requiring safe use

Match the reagent to the nutrient it us used to test for?

What colour does iodine turn in the presence of starch?

What substance can be used to test for the presence of lipids?

Is this a positive or a negative test for Benedict's solution?

What colour does Biuret solution turn if it comes into contact with protein?

True or false? This food contains a small amount of reducing sugar?

True or false? Proteins and carbohydrates are polymers.

Which of these is a use for lipids in an organism?

True or false? Animals store carbohydrate as glycogen.

Tests for biological molecules

Lesson outcome

Content guidance