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Growth Regulators - Growth substances are also called the phytohormones . The phytohormones have been put in five different categories based on their actions. They are: auxins gibberellins cytokinins ethylene abscissic ac..

Nervous Regulation - 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 ..

Growth Regulators - Growth substances are also called the phytohormones . The phytohormones have been put in five different categories based on their actions. They are: auxins gibberellins cytokinins ethylene abscissic acid The regulators associated with cell enlargement and dif..

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 cor..

This gene controls the operator gene in cooperation with a chemical substance called inducer present in the cytoplasm. A regulator gene is not necessarily adjacent to the operator gene which it controls. The regulator gene codes for and produces a protein called repressor. The ..

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 effects on growth and developm..

Growth substances are also called the phytohormones. The phytohormones have been put in five different categories based on their action..

Growth substances are also called the phytohormones . The phytohormones have been put in five different categories based on their actions. They are: auxins gibberellins cytokinins ethylene abscissic aci..

Genes do not operate to produce enzymes all the time. Each gene is normally more or less repressed (inactive); but, when a particular enzyme is needed, the relevant gene becomes active to bring about the production of that enzyme. A totally active gene can produce a very large amount of enzym..

Advantage of the Regulation of Gene Action - An operon is the unit of transcription. When excess protein is present, it is no longer economical for the cell to use up its energy and materials in the synthesis of enzymes that are not immediately needed. Hence, the protein synthesis is stop..