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The first antibiotic to be discovered was_____________?

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The endosperm consists of a mass of starch-laden cells surrounded by a layer of cells called the Which of the following suggests that at every level from the molecule through the supramolecular organelle, the cell, the tissue, the organism, the individualand upto the population or the society, the properties of life depend only to a small degree upon the substances of which living matter is composed? The disease caused by HIV is Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called__________? Which one of the following organelle is not found in prokaryotic cells?