What is the biotest?
Biotest, a shortened form of a biological test, is a type of test in which scientists measure the effects that the substance has on living things. Sometimes they try to predict what the substance will do to people by observing the reactions of other creatures to it. In other cases, the reaction of a particular organism or type of cell is used to identify an unknown substance. Biological test tests are often criticized by animal rights and manufacturers of tested products who claim to sometimes provide beveled results. First, when developing a new drug or solving the effects of toxins that have not yet been studied, it is difficult to bring the effects that the substance will have on live creatures without testing it on living creatures. Inorganic tests can tell scientists what molecules are in the substance, but forms of life and cells of living creatures react to the tables of the table. For example, different components of the substance can interact, so the finding that is most relevant in predicting the effect that will have on the person is the effect he had on another being rather than what JSou her individual components.
The second reason is that inorganic tests can be unavailable. The substance sometimes causes a reaction, but scientists are unable to identify the exact compound that caused it. In these cases, it is often impossible to develop an inorganic test because scientists do not know which molecule they are testing. The scientist may think that the plant is, for example, toxic, but has no way to know which toxin can be active. It could therefore carry out a biotest to see if ingesting the plant toxic to the mouse.
Biotest is any test in which scientists apply a substance to living material and quantuphoho is the results. There are two categories of these tests. In vitro tests, they use living mass such as cells. Tests in vivo use the whole organism.
Scientists often use in vitro biological tests to test certain toxins. One of the common biotests in vitro is tesT Limulus, named for Horseshoe Crab. Scientists mix test culture with blood cells from crabs. It collides in the presence of endotoxins, which are poisons that are found inside some gram -negative bacteria that are released when bacterial cells break down. This test can help scientists identify the bacteria they deal with.
In vivo testing is often used for predictive tests and the most commonly used animal in biological tests is a mouse. For example, scientists can put drugs into pregnant mice to see if these specific drugs are moving from the mother to the fetus. They can then recommend that pregnant women should take medication.
In France, testing in vivo has been used every season to test oysters for toxins. Mice were injected with oyster juice and the product could not be sent if two -thirds of the mice died in one day. Oyster fishermen raised objection because mice often died of other causes and condemned a safe producty. France has recognized its objections by announcing the end of this practice in January 2010. However, this means that future oyster testing will be limited to a certain number of toxins, to thresholds that scientists think they will cause illness.