Enzymes are special proteins that help all of the chemical reactions in our bodies occur more easily (faster --- ergo why they call enzymes 'catalysts').
Each enzyme has a preferred or optimal pH and temperature that it 'likes' to function at. If that particular pH or temperature is altered, the ability of that enzyme to do its job is altered (for the worse) as well.
Each hemoglobin molecule is made up of four heme groups surrounding a globin group, forming a tetrahedral structure
This is all I know about this, let me know if you still have questions ;)
Answer:
D
Explanation:
Not sure but the sentence is super understamdable