Author: pcsclasses
-
Cell Division-Meiosis
Cell Division-Meiosis The term meiosis was coined by J.B Farmer and J.F Moore, and the cell in meiosis was found termed meiocytes. Meiosis occurs in sexual reproduction, where the production of offspring by the fusion of gametes with a haploid set of chromosomes. This division is also called reduction division because the number of chromosomes…
-
Cell Division-mitosis
Cell Division-mitosis Introduction: Cell division is the process by which a parent cell divides into two or more daughter cells. Organisms need new cells to grow, replace old, dead, and injured cells, and also form gametes which are necessary for reproduction, the process by which cell arises from pre-existing cells is called cell division. A…
-
Biomolecules and their importance
Biomolecules The cell of organisms is made up of various organic as well as inorganic elements and water. All the chemicals or molecules essential for the maintenance of all vital or physiological actions of the body are termed biomolecules. A biomolecule or biological molecules are present in organisms that are essential to one or more…
-
Cell Organelles
Cell Organelles Cell organelles are cellular components present inside the cells. It is a subcellular (present within the cell) structure that performs one or more specific jobs in the cell. Cell organelles on the basis of membrane The cell organelles includes membranous as well as non- membranous bound organelles. There are different types of organelles…
-
Structure and function of cell
Structure and function of cell The cells are the building blocks of the body and are thus considered the structural units of organisms. These are also called functional units because each cell performs certain functions essential for the survival and maintenance of the body. Discovery of cell: Aristotle (384-322 BC) put forward the concept of…