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Both are considered microorganisms but viruses are arguably not living organisms as they cannot reproduce without living hosts . Apart from this, viruses are much smaller than bacteria and differ in terms...

The role of a sperm cell is to fertilise an egg. The head contains the nucleus, which holds the male genetic material. It has a tail for swimming to the egg. It is packed with mitochondria to supply the e...

Meiosis consists of 2 separate divisions and produces 4 genetically different daughter cells, whereas in mitosis there is only one division and it produces 2 genetically identical daughter cells. Meiosis ...

Homeostasis is a maintenance of a constant internal environment.
The human nervous system consists of central nervous system; brain and spinal cord and peripheral nervous system which is subdivided i...

Arteries are the blood vessels which deliver oxygen-rich blood from the heart to the tissues of the body. The outer layer of an artery is made of collagen fibers. The middle layer has smooth muscle and el...