GCSE /KS3 Biology – Digestive System Exam Style Questions – “Do It Yourself” with Answers

Microvilli are adapted to increase the surface area of the small intestine. How does it help?

What is the name of the enzyme that is used in the synthesis of DNA from its monomers?

The enzyme amylase is found in:

Enzymes are made from --

Where does the substrate of the enzyme fits at the start of a reaction?

In the digestive system, proteins are broken down to make:

Lipids are broken down by the enzyme lipase to form:

The muscle cells of the small intestine require a lot of energy and are adapted by having many ---

If the active site changes shape too much because of changes in temperature or pH, the enzyme will no longer catalyse the reaction.
The enzyme is said to be:

What is the name for the substances that enzymes work on?