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Atom And Molecule
Atom And Molecule
Atom An atom is the smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element. The atom is the basic building block of all matter. Atoms are very small, they are smaller than […]
BIOLOGY: The Living World
IMPORTANT POINTS: Characteristics of Living Organisms : Growth, reproduction, metabolism, cellular organization, consciousness (ability to sense environment), self-replicating and self regulation. • Reproduction and growth are NOT defining properties. • Metabolism, cellular organization and consciousness are defining properties. Biodiversity Term used to refer to the number of varieties of plant and animals on earth. Nomenclature: […]
Cell
Cell The Cell,(comes from Latin word cella,meaning “small room”) is the smallest unit of life. It is basic structural,functional, and biological unit of all living organisms. Cell was discovered by Robert Hooke in 1665. Cells are often called the “building blocks of life”. All plants and animals are made of cells. Organisms are classified as […]