mitochondria function

Lipids perform several important functions in biosystems. Phospholipids are the constituents of cell mebrane and regulate membrane permeability. Phospholipids are also used as detergents to emulsify fat for transport within the body. They act as cellular metabolic regulators. ..

Each cell can be regarded as a compartment by itself since it is bound on all the sides by a cell membrane. It separates the protoplasm within the cell from the surrounding environment. As a result, the cell is able to retain specific molecules and carry out certain reactions in an orderly manner. ..

All living organisms require a continuous supply of energy for carrying out various functions. The main source of energy for all the functions, in all living organisms is cellular respiration. Cellular respiration is an energy releasing, enzymatically controlled catabolic proces..

The cells are relatively smaller in size compared to mature cells. They are either rectangular or isodiametric in shape. The cells are always compactly arranged, without any intercellular spaces. The cells have a thin cell wall, which is composed of only cellulose. The cells enclose a la..

. Secondly, the cell builds up a sufficiently large store of energy to carry out the process of cell division. New cytoplasmic organelles also are formed during interphase-mitochondria, ribosomes, chloroplasts etc. One of the most prominent organelles to double itself during mitosis is th..

Two things happen during interphase. First, the DNA doubles itself so that sufficient DNA is made available for each of the two daughter cells. A cell never divides until this new genetic material is formed. Secondly, the cell builds up a sufficiently large store of energy to carry out the process ..

) or secretory products (gums, alkaloids, hormones, etc) or excretory products (calcium carbonate and other salts). These substances are generally stored in the vacuoles. Cell organelles are mainly of two types membrane-bound and non-membranous. Membrane bound organelles include endoplasmic reticul..

The molecular structure of cell membrane is still not clearly known. Several models have been proposed from time to time to explain its structure based on its physico-chemical properties. In the year 1935 Danielli and Dawson proposed that the cell membrane is made up of a lipid layer sandwiched bet..

The spermatids formed as a result of maturation division is a typical animal cell with all the cell organelles present in it. In this form it cannot function as a male gamete. So many changes take place to change the non-motile spermatid into motile spermatozoan. The main aim of the chang..