Example : Glucose, Starch, Cellulose and many more
Carbohydrates are polymers which are made up of number of sugar monomers like glucose, bonded via glycosidic bonds. These glycosidic bonds can undergo hydrolysis via enzymes. For example, amylase hydrolyse starch and cellulase hydrolyse cellulose.
The main function of carbohydrates is as energy source of mayn living beings and it is the main energy source of humans.
Example: Enzymes and some other bilogically active molecules in nature. Haemoglobin is a good example.
Due to the molecular bonding withing the amino acid sequence proteins automatically fold into a structure of their own. This makes the activity of that protein more specific and efficient.
Enzymes, which are proteins act as biological catalysts in a lot of reactions. In starch hydrolysis, amylase act as the catalyst.
Fatty acids. They are usually found in natural oils like coconut oils. Some fatty acids are oleic acid, palmitoleic acid and myristoleic acid.
Due to their long hydrocarbon chains and carboxylic acid group, they exihibit both hydrophobic and hydrophillic properties. This property is widely involved in making cell membranes in nature.
Lipids are involved in cell membranes, especially phopolipids. Also fats are used as a long term energy storage in humans and other animals.