the eye rods and cones

The Two types of light sensitive cells in the retina are Rods and Cones. Rods – Are stimulated in dim light( black and while) Cones – Help us to see colors under high light intensity. Radial muscle – contracts pupil get wider in bright light Circular muscle – in dim light these muscles contact and pupil… read more »

What are enzymes

Enzymes   There are thousands of enzymes in your body – it could not function without them. Some enzymes need an extra substance, called a coenzyme, to work. Many coenzymes are vitamins. Most enzymes have names ending in ‘ase’, such as lipase protease and lipase. Pacemaker enzymes play a vital role in controlling your metabolism… read more »