Gene Regulation

GENE REGULATION Gene regulation is the informal term used to describe any mechanism used by a cell to increase or decrease the production of specific gene products (protein or RNA). Cells can modify their gene expression patterns to trigger developmental pathways, respond to environmental stimuli, or adapt to new food sources. All points of gene … Read more

Protein Synthesis

PROTEIN SYNTHESIS Proteins are the end product of many metabolic processes. A typical cell requires thousands of different protein Molecules at any given moment. So, the protein requirements of a particular cell has to be satisfied by synthesizing them at site or has to be transferred from where it is being synthesized. This is in … Read more

DNA Structure & Function, DNAReplication,

DNA: STRUCTURE   DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the … Read more

Production of modern vaccines (production of Hepatitis Vaccine)

Production of modern Vaccines Live Attenuated Vaccines Live vaccines are derived from “wild,” or disease-causing, viruses or bacteria. These wild viruses or bacteria are attenuated, or weakened, in a laboratory, usually by repeated culturing. For example, the measles virus used as a vaccine today was isolated from a child with measles disease in 1954. Almost … Read more

BIOMOLECULES

  There is vast diversity of living organisms. The chemical compositon and metabolic reactions of the organisms appear to be similar. The composition of living Tissues and non-living matter also appear to be similar in qualitative analysis.Closer analysis reveals that the relative abundance of carbon, hydrogen and Oxygen is higher in living system.  All forms … Read more

Tissue culture, Cloning

Tissue Culture Tissue culture, a method of biological research in which fragments of tissue from an animal or plant are transferred to an artificial Environment in which they can continue to survive and function. The cultured tissue may consist of a single cell, a Population of cells, or a whole or part of an organ. … Read more

Tissue culture and molecular markers

Tissue Culture methods and applications Tissue culture refers to a method in which fragments of a tissue (plant or animal tissue) are introduced into a new, artificial Environment, where they continue to function or grow. While fragments of a tissue are often used, it is important to note that entire organs are also used for … Read more

Fundamental unit of life-Cell

  Objects having characteristics of cellular organization, Growth, Reproduction, ability to sense Environment and give response are living organisms. There are some important features of living organisms: It should grow, which means its structure changes as time goes by in an advantageous manner. It should show adaptation to the environment. It should maintain some balanced … Read more

Chromosomes

 Chromosomes Chromosome, the microscopic threadlike part of the cell that carries hereditary information in the form of genes. A defining feature of any chromosome is its compactness. For instance, the 46 chromosomes found in human cells have a combined length of 200 nm (1 nm = 10− 9 metre); if the chromosomes were … Read more

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