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Definition
movement of substances through a membrane with the use of energy.
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the unit of structure, function, and development
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the substance of which chromosomes are make:proteins, DNA, and RNA.
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a type of active transport that imports particles or small cells into a cell.
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having a true nucleus with a nuclear membrane and organelles.
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a from of active transport by which cells move molecules, particles, or other cells contained in vesicles across the plasma membrane to the cell's environment.
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a reproductive cell that contains half the normal number of chromosomes: a sperm or egg cell.
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pair of chromosomes that resemble each other in length, shape, and the genes they carry. One comes from the mother and the other comes from the father.
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| a type of cell division that results in four reproductive cells (gametes) each with half the number of chromosomes of the parent cell. |
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a type of cell division that results in two daughter cells that have the same number and kind of chromosomes as the mother cell.
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an organism that is composed of more than one cell with each cell having a particular function unique to the well-being of the organism.
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parts of the cell whose functions are to contribute to the nourishment, function, and development of the entrie cell.
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Definition
movement of substances into and out of a cell without the use of energy.
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Definition
a selective permeable, molecular boundary that separates the cytoplasm of a cell from the eternal environment.
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Definition
having no organized membrane between DNA and cytoplasm and no true organelles.
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Definition
a one-celled organism that is complete within itself
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all living things are composed of cells and all cells come from other living cells of the same kind.
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| control center of the cell; stores hereditary information |
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system of folded membrane in teh cytoplasm; facilitates protein synthesis and distribution of materials throughout the cell.
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round-shaped structures in the cytoplasm; sites of protein synthesis.
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Definition
powerhouse of the cell, rod-shaped structures; chemical energy conversions for cell metabolism.
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structures that contain chloroplasts; conversion of light energy into chemical energy, store food.
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Definition
flattened membrane sacs; synthesis, packaging, and distribution of materials in the cell.
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Definition
a type of storage vesicle; digestion, waste removal.
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membranes containing enzymes; chemical conversions of fats to carbohydrates, discharge of wastes.
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Definition
a spherical vesicle; digestion, storage, and elimination.
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Term
| Microfilaments and Microtubules |
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Definition
fibers and tubes of protein; movement of internal cell parts.
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short and long extensions of microtubes from the surace of the cell; locomotion and production of currents htat draw food.
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Definition
short tubes near the Golgi bodies; necessary for cell reproduction within some cells.
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Definition
groups of similiar cells that are organized into a specialized structure and work together to perform a specific function.
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two or more groups of different tissues functioning together to perform a specific task.
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groups of organs working together to perform a certain function.
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the ability of a unicellular and multicellular organism to maintain a constnt internal balance regardless of changes in the external environmnet.
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the use of nutrients by an organism.
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the process that breaks large food into froms that can be used by the organism.
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the ability of an organism to take in food, oxygen, and other substances from its surroundings.
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the movement of food, oxygen, and other substances within the organism.
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the process of building new chemical compounds for the purpose of growth, repair, and reproduction.
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the release of substances within the organism.
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the release of energy from chemical breakdown of compounds within the cell.
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the ability of the cell to rid itself of waste products.
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the ability to react to stimuli from the environment.
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Definition
the process of fission in which one cell divides to form two identical new cells.
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Definition
the process in which a plant makes food from water an d carbon dioxide, using energy from the sun.
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