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Summary
With increasing complexity, the organisms have had to develop means of control and coordination between the different parts of the body. Coordination is necessary for acting as one unit and to maintain the homeostasis or steady state within the body. Control and coordination in animal..
The Linnaean Hierarchy
The Linnaean system of classification consists of a hierarchy of graded taxonomic (named) ranks that are called as taxa . Any given taxon (singular) may contain several lower taxa, which can be usually distinguished based on certain common characteristics. Such lower ranks may in turn be ..
Operator Gene
This gene controls a specific series of structural genes, and lies adjacent to them. It remains turned on because it is not bound by the repressor protein produced by the regulator gene. Therefore, the cistrons keep functioning, producing enzymes. The latter catalyse the synthes..
This gene controls a specific series of structural genes, and lies adjacent to them. It remains turned on because it is not bound by the repressor protein produced by the regulator gene. Therefore, the cistrons keep functioning, producing enzymes. The latter catalyse the synthes..Summary
>The homeostatic mechanisms work on a negative feedback. In order to ensure the continuation of species, all living organisms exhibit reproduction. The entire cellular information is stored in the DNA which undergoes replication to transfer the information to the successive generations. The surviva..
Antibody - mediated immunity
>Neutralisation of toxins released by bacteria, For e.g., Tetanus toxin. In man, immunoglobulins are of 5 class: Ig A, Ig D, Ig E, Ig G and Ig M. Each has a distinct chemical structure and a specific biological role. Ig G antibodies enhance phagocytosis, neutralize toxins and pr..
>Neutralisation of toxins released by bacteria, For e.g., Tetanus toxin. In man, immunoglobulins are of 5 class: Ig A, Ig D, Ig E, Ig G and Ig M. Each has a distinct chemical structure and a specific biological role. Ig G antibodies enhance phagocytosis, neutralize toxins and pr..Minerals
Minerals - Minerals occurring in the living cells form components of various inorganic and organic substances. About 20 different elements form the essential nutrients for the cells. Minerals in the living system occur in two forms (i) compounds or (ii) ions. Minerals represent only about..
Introduction
A tissue is a group of cells having a common origin, similar structure and performing a common function. Tissues are characteristic of advanced multicellular animals, commonly called as eumetazoans. They are true multicellular animals where the body cells aggregate to form tissu..
A tissue is a group of cells having a common origin, similar structure and performing a common function. Tissues are characteristic of advanced multicellular animals, commonly called as eumetazoans. They are true multicellular animals where the body cells aggregate to form tissu..Nucleotides
Nucleotides are nitrogen containing organic compounds, which form the monomers of nucleic acids that are involved in the information transfer system of the cells. They are also involved in the mechanism of energy transfer in cells. A nucleotide is a compound containing carbon, hydrogen, o..
Summary
. The nervous system has three parts - central nervous system (CNS), peripheral nervous system (PNS) and autonomic nervous system (ANS). The CNS is made up of brain and spinal cord. Brain has different areas that are responsible for specific functions..
Polysaccharides
fig. 14.2 - Starch Grains from Different Sources Based on their functional significance, polysaccharides can be distinguished under two categories namely storage polysaccharides (e.g., starch and glycogen) and Structural polysaccharides (e.g., cellulose, lignin and chitin). The ..
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