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Notes of Biology
Notes of Biology

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Translation is a process of synthesis or formation of protein from mRNA. Three process like initiation, elongation and termination are involve in translational process. 

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Replication is a process of copying of DNA. Messelson and stahl done an experiment to prove that DNA is of semi-conservative in nature where one strand is antisense or template strand and other strand is sense or leading strand. 

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Proteins are the building blocks of body which are composed of amino acids. Proteins have four level of structures; Primary structure, secondary structure, tertiary structure and quaternary structure. 

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Lipids are most diverse biological molecule which is insoluble in water and soluble in polar solvents. There are three types of lipid; simple lipid, compound lipid, derived lipid. Simple lipids includes fats and waxes. Compound lipid includes phospholipid, glycolipid. Derived lipid includes steroid, terpenes, carotenoids. 

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Biomolecules are organic molecule present in living organisms.They are of four types carbohydrate, protein, lipid, nucleic acid. Carbohydrates are polyhydroxy aldehydes and ketones which are classified in three types; Monosaccharides, disaccharides and polysaccharides. 

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Each and every enzymes are specific to catalyze a particular reaction. Enzymes are also inhibited by different kinds of inhibitors. All enzymes performs variety of functions. 

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Enzymes are biological catalysts which increase the rate of reaction without even participated in the reaction. Enzymes are classified into six classes. 

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Chordates are the most developed organism on this earth. Chordates includes vertebrata which further subdivided into five classes which starts from less developed aquatic pisces and ends in most developed terrestrial mammals. 

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Ecosystem is the interaction of living organisms with their environment. Biotic and abiotic components constitute the physical structure of ecosystem. Productivity and decomposition are another components of ecosystem. 

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Nutrient cycling means movement of nutrients through various component of ecosystem. This includes sedimentary and gaseous cycle where phosphorous is an element which is found on earth it flows in cyclic manner while carbon is found in gaseous state it cycles and return back to atmosphere. 
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