activity inhibition

Any chemical substance which has a molecular structure that closely resembles a substrate, can reduce or inhibit the activity of an enzyme. Such an inhibitor is called competitive inhibitor. This situation is comparable to a lock jammed by a key almost similar to the original o..

ABA inhibits mitosis in vascular cambi..

Chemotherapy is the use of chemicals or drugs to selectively destroy infectious micro-organisms without destroying the live tissues or the host. Paul Ehrlich called drugs as magic bullets and the first milestone of his research was the discovery of Salvarsan for curing syphilis, in 1909. In 1935, G..

Taking food in the soluble forms into the tissues. This involves the absorption of food in the soluble form from the region of digestion into the tissues or into where it has to be utilised or into the blood stream which transports it to the different tissues. This takes place through the cell mem..

Taking food in the soluble forms into the tissues. This involves the absorption of food in the soluble form from the region of digestion into the tissues or into where it has to be utilised or into the blood stream which transports it to the different tissues. This takes place through the cell mem..

These are chemicals which inhibit the action of auxins. Examples: 2, 3, 5 triiodobenzoic acid (TIBA) and napthylthalmic acid (NPA). Free auxins - are auxins which can be easily extracted. They are active. Bound auxins - are auxins which are difficult to extract. They are inactiv..

>RNA cannot undergo replication and have to be synthesised only from DNA. Enzymes are basically proteins that function as biological catalysts. Enzymes carry on their catalytic action by lowering the activation energy required for a reaction to proceed. Sometimes an enzyme may have non-pr..

Hormones are informational molecules. They are secreted in response to changes in the environment inside or outside the body. These are released into the extracellular fluid, where they are diffused into the blood stream. The latter carries them from the site of production to the site of action. Th..

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 heart is regulated to a large extent through the central nervous system. The heart nerve branches from the vagus nerve from the medulla oblongata and the sympathetic nerve fibres from the spinal cord. The vagus nerves are cardiac inhibitory nerves. When the vagus nerve is stimulated, the a..