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What is the respective importance of water, carbon and nitrogen for living beings?
Water is the major solvent of living beings and it is essential practically for all biochemical reactions, including as reagent of photosynthesis. Lots of properties of water are very significant for life.
Carbon is the major chemical element of organic molecules; carbon dioxide is also reagent of photosynthesis and product of the energetic metabolism of living beings.
Nitrogen is a fundamental chemical element of amino acids, the building blocks of proteins that in their turn are the major functional molecules of living beings; nitrogen is also part of the nucleic acid molecules, the basis of reproduction, heredity and protein synthesis.
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The response produced when an allergen is injected into an individual, who is sensitive is known as P-K reaction.
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Does radioactive dating with isotopes of uranium and thorium provide an estimate of the starting, middle, or end of the period of Earth's formation? Explain your answer No, th
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CHLOROPLASTS Schimper (1883) coined the term chloroplastid for green plastids. Mayer called them Autoplast. Chloroplast name proposed by Erera. Green plastids wi
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