OCR GCSE Biology Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success

Question: 1 / 1090

What occurs if an enzyme loses its shape?

It can still catalyze reactions

It becomes more efficient

It cannot catalyze the reaction

When an enzyme loses its shape, it becomes denatured, which means it can no longer function properly. Enzymes have a specific three-dimensional structure that is crucial for their activity. This structure includes an active site, which is where substrates bind and reactions occur. If the enzyme's shape is altered due to factors such as extreme temperatures, pH changes, or chemical exposure, the active site can become impaired, preventing the enzyme from binding to its substrate effectively. As a result, the enzyme cannot catalyze the reaction, leading to a loss of its biological activity. This emphasizes the importance of the enzyme's structure in maintaining its functionality.

Get further explanation with Examzify DeepDiveBeta

It works better at higher temperatures

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy