Biology

>

A-Level

Biological Molecules

Question

Give examples of metabolic poisons that act as enzyme inhibitors.

2 years ago

·

1 Reply

·

1563 views

G

Greta Zemlak


1 Answer

Aqeel A Profile Picture
Aqeel A Verified Sherpa Tutor ✓

Enthusiastic maths and science tutor with over 5 years of experience.

Potassium Cyanide is an irreversible inhibitor of Cytochrome C Oxidase (involved in the electron transport chain in respiration). Following inhibition of this enzyme, ATP synthesis is stopped. Cells are then dependent on anaerobic respiration leading to an increase in Lactic acid production.


Malonate is a competitive inhibitor of Succinate Dehydrogenase. It has a shape complementary to the active site of succinate dehydrogenase and hence competes with Succinate (original substrate) for binding.


I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.

Think you can help?

More Biology A-Level Questions
Sherpa Badge

Need an A-Level Biology tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find an A-Level Biology Tutor