Researchers investigated the activity of the enzyme sucrase, which breaks down sucrose into glucose and fructose. They prepared multiple test tubes, each containing:
Explain how the induced-fit model of enzyme activity describes both the binding of a substrate to the active site and how this process reduces the activation energy of a reaction.
In this metabolic reaction, water is also consumed. Name the type of chemical reaction catalyzed by sucrase.
The researchers stopped each reaction exactly 5 minutes after starting it to measure the concentration of fructose. Suggest and explain one method the researchers could have used to stop the reaction.
The graph below shows the researchers' results:
Explain the shape of the curve as sucrose concentration increases from 0 to 200 mmol dm−3\text{mmol dm}^{-3}mmol dm−3.
Practise AQA A Level Biology Proteins with exam-style questions for A Level Biology. 22 questions covering General properties of proteins and Many proteins are enzymes, matched to the AQA A Level Biology (7402) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
