Awareness about different medical tests are needed nowadays. Everybody should have some basic ideas on different medical/pathological tests, terminologies etc. I am trying to incorporate some names of the tests here. Some Important Medical Tests 1. ELISA (Enzyme linked immunoassay) -Test for HIV-AIDS. 2. Amine Test- This is a test to know the carcinogen (Cancer) [...]
Biologists occasionally need to examine some microscopic animals or plants. Microscopes magnify the specimens 1000 times or more larger than normal. So, understanding about the measurements is a must. In biology, the units of length commonly employed include the micron (abbreviated by µ) and the Angstrom (abbreviated by Å). A micron is equivalent to 10 [...]
An enzyme (E) combines with its substrate (S) to form an intermediate enzyme-substrate complex (ES) , which then decomposes into reaction products(P) and the free enzyme, as seen in the equation below. E S ————— > ES ———- > E + P enzyme-substrate complex An enzyme causes the substrate upon which it is [...]
Allosteric enzymes have, in addition to an active site, another stereo-specific site to which an effector or modulator molecule can bind. When it does, the shape of the active site is altered so that it can or cannot bind substrate (allosteric stimulation or inhibition respectively). In this way the enzyme can be part of a [...]
Cofactors are metal ions. These ions commonly provide a needed change within an active site. Many enzymes use metal ions to change a non-functioning active site to a functioning one. In these enzymes, the attachment of a cofactor causes a shape change in the protein that allows it to combine with its substrate. The cofactors [...]
