regulation d securities act

Growth Regulators - The growth of plants is regulated by certain chemical substances, which are synthesized by the plant in very small quantities. These substances are formed in one tissue or organ of the plant and are then transported to other sites where they produce specific ..

It controls the operator gene in cooperation with a substance called co repressor present in the cytoplasm. The regulator gene codes for a protein named aporepressor. The latter combines with the co-repressor, and aporepressor-co-repressor complex joins the operator gene, which is turned ..

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, ..

Role Of Hormones As Messengers And Regulators - 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 ..

. Modification of histones makes large blocks of genes available for RNA transcription by loosening the tightly packed inactive chromatin. The specific nonhistone proteins then determine which of the available genes are to be actually transcribed. For this, the nonhistone recognizes a specific DNA ..

This is also a fat soluble vitamin. Ergo calciferol and cholecalciferol are the provitamins of vitamin D. Ergocalciferol is vitamin D 2 formed from ergosterol. Cholecalciferol is vitamin D 3 found in animals. Vitamin D is stored in liver and other tissues...

>S, which are molecular solids, have low heats of fusion because the forces of attraction between their molecules are weak forces. Thus, the heats of fusion of substances give an idea of nature of solid and the magnitude of forces acting between the particles constituting the soli..

The proteins act as buffers in regulating the acid and base concentration in bloo..

Biotic community occupies particular area with specific physical environment, which acts as a limiting factor, regulating the population size of various species within the communit..

The liver is an important organ in the body, in addition to being a digestive gland. Its importance can be understood by listing its functions which are as follows: It produces bile which helps in digestion of fats and lipids It converts glucose to glycogen and helps to control the level of sug..