mathematical models in biology

In the year 1972 Singer and Nicolson proposed a model for explaining the membrane structure, taking into account all the known facts. According to this model, cell membrane consists of a highly viscous fluid matrix of a bilayer of phospholipids having globular proteins ass..

Fluid Mosaic Model - In the year 1972 Singer and Nicolson proposed a model for explaining the membrane structure, taking into account all the known facts. According to this model, cell membrane consists of a highly viscous fluid matrix of a bilayer of phospholipids hav..

Lymph nodes are oval or bean shaped bodies placed in the lymphatic vessels. They act as filters and are sites where lymphocytes are formed. The main groups of lymph nodes lie in the neck, axilla, thorax, abdomen and groin. They help in the production of antibodies and in the development of immunity..

This gene is located adjacent to the operator gene. It has two functions. 1.The promoter gene marks the site at which the RNA polymerase enzyme binds. When the operator gene is turned on, the enzyme moves over the operator gene to reach the structural genes and the transcription of mRNA starts. 2...

All parasitic have successfully adapted to live either on or inside their hosts. Some of their important adaptations ar..

It is the resemblance of organisms to other organisms or with non-living objects in form, colour and behaviour to escape predator's notice. An organism that bears resemblance is called mimic and the organism to which it resembles is called model. It was first described by Henry Bates in ..

The inflammatory response may be localized or systemic. The localised response is confined to the site of injury only. The systemic response affects the entire body in case of a severe infection or a serious injury. In this case, the WBC count of the blood increases. Body temperature rises causing ..

The structure of the DNA molecule and the arrangement of nitrogenous bases in the two polynucleotide chains, is very well explained by the double helix model proposed by Watson and Crick in 1953. Watson and Crick According to the double helix model, DNA molecule shows the f..

Nucleic Acids are giant macromolecules having a complex structure and very high molecular weight. There are two types of nucleic acids in a cell, namely De-oxy ribose nucleic acid and Ribose nucleic acid. The double helix model was proposed by Watson and Crick. The total amount..

Transport of Minerals - Minerals are absorbed from the soil along with water as they are dissolved in water. They are taken up in the ionic form . For example, potassium is taken up as K + ions. They are transported through the xylem along with the water. Some of the mineral ions like the nitrates ..