Question

multiple choice question
the difference between the structure of saturated fats and unsaturated fats is that ______.

saturated fats have larger molecules
unsaturated fats contain single bonds only between their carbon atoms
unsaturated fats contain one or more double bonds between their carbon atoms
saturated fats are polymers and unsaturated fats are not

Explanation:

1. Analyze Option 1: The size of molecules isn't the key structural difference between saturated and unsaturated fats. So this is incorrect.
2. Analyze Option 2: Unsaturated fats have one or more double bonds, not only single bonds. Saturated fats have only single bonds. So this is incorrect.
3. Analyze Option 3: Unsaturated fats have one or more double bonds between carbon atoms, while saturated fats have only single bonds. This is the correct structural difference.
4. Analyze Option 4: Neither saturated nor unsaturated fats are polymers (polymers are large molecules made of repeating subunits, and fats are not formed in that way). So this is incorrect.

Answer:

C. unsaturated fats contain one or more double bonds between their carbon atoms