prokaryotes

Nucleus: Structure and Functions

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It is one the most important and largest cellular organelle which has a diameter of 10 µm to 22µm occupying about 10% of total volume of the cell. All the cells in the body possess nucleus except red blood cells. On the basis of presence of nucleus in the cells, the cells are classified as … Read more

Some exceptions in Biology

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Some exceptions in Biology

Physical sciences are governed by a set of laws, such laws are rigid and show no deviations or exceptions. But, biology is a science of life. It deals with living organisms. The living organisms show enormous variations and are capable of change. Therefore, the laws of physical and chemical phenomena associated with life processes show … Read more