What accounts for the differences in the functions and properties of molecules like starches, glycogen, cellulose and chitin?

The difference in their structure gives them different properties and functions

Explanation:

If you're reading the 01.02A Chemistry of Life (Honors) course, go to the section called "Carbohydrates" Then go to the very last part of the section there you will find a sentence that says  " They are all polymers made up of hundreds to thousands of glucose molecules bonded together, but the difference in their structures gives them different properties and functions." That's the sentence that I used to respond to this question.

b - the respond is innate and varies over time.

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