Our site uses cookies. Some of the cookies we use are essential for parts of the site to operate and have already been set. You may delete and block all cookies from this site, but parts of the site will not work. To find out more about cookies on this website, see our Cookie Policy
Accept
© eRevision.uk and ZigZag Education 2025
This test is run by .
Note that your final mark will not be saved in the system.

Enzymes GapFill

Target Level
4-5
Running Total
0
0%
Attempt
1 of 3

You must fill all the gaps before clicking ‘Check Answers!’

Most of the reactions that take place in the body, including those that play a role in digestion, are catalysed by enzymes. Enzymes are made of  carbohydrateswaterproteinsoxygen, and their shape is what allows them to perform their role. They work under very specific conditions, including specific  pHpressureshumiditieslight intensities and temperatures. Beyond these ideal conditions, bonds break in the enzymes, stopping them from working - they are then referred to as being  defunctoutcompeteddeoptimiseddenatured.

Enzymes have an active  zonearealocationsite, which is the part of the molecule into which substances fit. This part is very specific to a single type of molecule. It is due to this that scientists use the term  open and closeshoe and footdoor and handlelock and key to describe the model.

Proteins are broken down by enzymes into  amino acidsoxygenwaterfatty acids, which the body can use to make new proteins. Similarly, complex carbohydrates can be broken down into simple sugars, including  methaneglucosehydrochloric acidtriglyceride, which can be used during respiration. 

The enzyme  catalaseamylasehelicaselipase facilitates the break down of starch. Starch can be detected using the chemical  silver nitrateethanolbromineiodine.

This is your 1st attempt! You get 3 marks for each one you get right. Good luck!

Pass Mark
72%