Binding site
Kindly refer to the similar link given below:
https://www.meritnation.com/ask-answer/question/explain-15-4-pg-437-question-i-have-gone-through-meritnatio/polymers/8647864
https://www.meritnation.com/ask-answer/question/explain-15-4-pg-437-question-i-have-gone-through-meritnatio/polymers/8647864