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| A science that explores living things and life processes. |
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| The chemical building block for all living things. |
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| Water and Mineral Salts ( electrolytes) |
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| The most important inorganic substances |
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| Chemical secretions manufactured by various endocrine glands and carried by the bloodstream to influence the activities of other parts of the body |
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| Fats or fatlike substances |
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| The master chemical-contains all the information the cell needs to function |
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| tiny rod-shaped bodies that under a microscope appear to be long, threadlike structures that become visible only in dividing cells |
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| The total amount of genetic material (DNA) contained within the chromosomes of a human being |
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| Compounds that do not contain carbon |
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| a frail, semipermeable, flexible structure encasing and surrounding the human cell |
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| the protoplasm that exists outside the cell's nucleus |
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| endoplasmic reticulum (ER) |
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| a vast, irregular network of tubules and vesicles spreading and interconnecting in all directions throughout the cytoplasm |
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| large, double-membranous, oval or bean-shaped structures that supply energy for all cells |
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| very small spherical organelles that attach to the ER. They consist of two thirds RNA and one third protein |
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| the multiplication process whereby one cell divides to form two or more cells |
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| when a parent cell divides to form two daughter cells identical to the parent cell |
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| a special type of cell division that reduces the number of chromosomes in each daughter cell to half the number of chromosomes in the parent cell |
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| the branch of biology concerned with the effects of ionizing radiation on living systems |
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| a potential outcome when ionizing radiation interacts with a DNA macromolecule |
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