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Definition
| the diffusion of water through a selectively permeable membrane |
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| the diffusion of water through a selectively permeable membrane |
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| movement from areas of high concentration to areas of low concentration |
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| movement from areas of high concentration to areas of low concentration |
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| requires energy to move material across the membrane |
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| requires energy to move material across the membrane |
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| process by which a cell releases large amounts of material |
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| process by which a cell releases large amounts of material |
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| process by which a cell takes material into the cell by infolding of the cell membrane |
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| process by which a cell takes material into the cell by infolding of the cell membrane |
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| process by which a cell takes in liquid from the surrounding enviroment |
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| process by which a cell takes in liquid from the surrounding enviroment |
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| process in which extensions of cytoplasm surround and engulf large particles and take them into the cell |
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| process in which extensions of cytoplasm surround and engulf large particles and take them into the cell |
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| movement of material across a membrane that does not require energy |
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| movement of material across a membrane that does not require energy |
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| negatively charged particle; located outside the atomic nucleus |
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| negatively charged particle; located outside the atomic nucleus |
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Definition
| center of a cell or atom; contains DNA in a cell and protons and neutrons in atoms |
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| center of a cell or atom; contains DNA in a cell and protons and neutrons in atoms |
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| macromolecule; includes fats, oils, and waxes |
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| macromolecule; includes fats, oils, and waxes |
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| needed by the body for growth and repair and to make up enzymes |
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| needed by the body for growth and repair and to make up enzymes |
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| major source of energy for the body; made up of carbon, hydrogen, and oxygen atoms |
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| major source of energy for the body; made up of carbon, hydrogen, and oxygen atoms |
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| a sugar composed of two monosaccharides |
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| a sugar composed of two monosaccharides |
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| large macromolecule formed from monosaccharides |
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| large macromolecule formed from monosaccharides |
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| any of two or more substances that are composed of the same elements in the same proportions but differ in properties |
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| any of two or more substances that are composed of the same elements in the same proportions but differ in properties |
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Definition
| atom of an element that has a number of neutrons different form that of other atoms of the same element |
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| atom of an element that has a number of neutrons different form that of other atoms of the same element |
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| protein that acts as a biological catalyst |
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| protein that acts as a biological catalyst |
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| cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use |
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| cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use |
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| small particle in the cell on which proteins are assembled; made of RNA and protein |
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| small particle in the cell on which proteins are assembled; made of RNA and protein |
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| cell organelle filled with enzymes needed to break down certain materials in the cell |
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| cell organelle filled with enzymes needed to break down certain materials in the cell |
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| cell organelle that stores materials such as water, salts, proteins, and carbohydrates |
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| cell organelle that stores materials such as water, salts, proteins, and carbohydrates |
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Definition
| internal membrane system in cell in which lipid components of the cell membrane are assembled and some proteins are modified |
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| internal membrane system in cell in which lipid components of the cell membrane are assembled and some proteins are modified |
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| fanlike microtubule structure that helps separate the chromosomes during mitosis |
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| fanlike microtubule structure that helps separate the chromosomes during mitosis |
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| cell replication in sex cells |
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| cell replication in sex cells |
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| period of the cell cycle between divisions |
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| period of the cell cycle between divisions |
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| structures that have different mature forms in different organisms but develop from the same embryonic tissues |
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| structures that have different mature forms in different organisms but develop from the same embryonic tissues |
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Definition
| organ that serves no useful function in an organism |
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| organ that serves no useful function in an organism |
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| process by which unrelated organisms independently evolve similarities when adapting to similar enviroments |
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| process by which unrelated organisms independently evolve similarities when adapting to similar enviroments |
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Definition
| occurs when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve |
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| occurs when individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve |
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Definition
| occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals at the middle |
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| occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals at the middle |
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