Question

How do lipids differ from carbohydrates and proteins?

Answer 1

Answer
Lipids are hydrophobic and insoluble in water. Carbohydrates and proteins are hydrophilic and able to form hydrogen bonds with water.
Explanation:
Lipids
Lipids have varied structures, but all have a polar "head" and a large nonpolar "tail"".
Fats and oils are typical lipids.
The structure of a typical fat is
The molecule is mostly nonpolar hydrocarbon with some polar C=O groups at one end.
Proteins
Proteins are large molecules that consist of long chains of amino acids joined together by peptide (CONH) bonds.
The structure of a small protein is
Proteins have polar C=O and N-H groups, so they are able to form hydrogen bonds with other molecules and with each other.
Carbohydrates
Carbohydrates have many polar OH groups.
A typical carbohydrate is starch, which is consists of many glucose units $\left(C_6{H}_{12}{O}_6\right)$joined together.
Most carbohydrates are hydrophilic and soluble in water because of their polar OH groups.