BIOLOGY

NUCLEUS

nucleus

NUCLEUS Introduction Nucleus is the ‘brain’ of the cell. Robert Brown had first used this term in 1831 for the opaque spots, which he had observed while studying epidermis of orchids. In 1866 Haeckel proposed that nucleus was responsible for…
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Kidney

kidney

Kidney I INTRODUCTION Kidney, paired organ whose functions include removing waste products from the blood and regulating the amount of fluid in the body. The basic units of the kidneys are microscopically thin structures called nephrons, which filter the blood…
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