Waxes are simple lipids having one molecule of fatty acid forming ester bond with one molecule of long chain alcohol e.g Bee's wax. Waxes are found as protective coating on stems, stalks, leaves, petals, fruit, skins, animal skins, fur and feathers etc. Hence, this option is incorrect.
One of the most important steroid is Cholesterol, a component of animal cell membrane and a precursor for the synthesis of a number of steriods, sex hormones such as testosterone, progesterone and estrogens. Hence, this option is correct.
Phospholipids are present in all living cells frequently associated with membranes and are related to vital functions such as regulation of cell permeability and transport processes. Properties of cell membrane depend on it phospholipid component. Hence, this option is incorrect
They are found in both animals and plants, provide energy for different metabolic activities and very rich in chemical energy. Hence, this option is incorrect.
One of the most important steroid is Cholesterol, a component of animal cell membrane and a precursor for the synthesis of a number of steriods, sex hormones such as testosterone, progesterone and estrogens. Hence, this option is correct.
