use of operon concept

Summary - Light is a form of energy which can be reflected either by a plane mirror or spherical mirror. Depending upon the type of mirror used for reflection of light the use of reflecting surface also varie..

Concept of Nutrient Availability - Soil is a living medium consisting of physical part - called as soil particles, chemical part - consisting of various compounds as well as biological part - consisting of various microbes, vertebrates, invertebrates inhabiting in soil. Unless all these c..

Concept of a Point Object - A real object can rotate as it moves. For example, a cricket ball may be spinning while it is moving, as a whole, in a trajectory. Also, a body may vibrate as it moves, for example, a falling water droplet. These complications can be avoided by considering the ..

A real object can rotate as it moves. For example, a cricket ball may be spinning while it is moving, as a whole, in a trajectory. Also, a body may vibrate as it moves, for example, a falling water droplet. These complications can be avoided by considering the motion of a very small body called a p..

To determine the position of an object, we must be able to see the object. This can be done with the help of light of suitable wavelength. When a beam of light falls on an object, the photons of this incident light are scattered by the object and the reflected light enters our eye. Now, if the obje..

Pollution is caused by almost all activities of human beings, either directly or indirectly. Use of mosquito repellent, use of cooking gas, use of diesel / petrol, use of detergent, passing of urine, throwing away wastes, use of pesticides, es..

Pollution is caused by almost all activities of human beings, either directly or indirectly. Use of mosquito repellent, use of cooking gas, use of diesel / petrol, use of detergent, passing of urine, throwing away wastes, use of pesticides, establis..

Introduction - Today graphics, tables, reasoning, estimation and prediction are playing a very important role in stating the facts in terms of figures. Statistics deals mainly in communicating facts and figures in terms of a method called statistical method. Collection, classification, tabulation, ..

Protein synthesis is a controlled process in which a given protein is synthesised in the cell only when it is necessary. When a particular protein is to be synthesised the specific gene has to express and initiate transcription. The mechanism that stimulates the expression of certain genes ..

An operon is the unit of transcription. When excess protein is present, it is no longer economical for the cell to use up its energy and materials in the synthesis of enzymes that are not immediately needed. Hence, the protein synthesis is stopped. This is clearly advantag..