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| A cell is the smallest unit that can carry on all of the processes of life. |
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1) All living things are composed of one or more cells.
2) Cells are the units of structure and function in an organism.
3) Cells come only from preexisting cells. |
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| Selectively permeable, and consists mostly of lipids and proteins. |
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| Organelles in which the energy in organic compounds is transferred to ATP. Mitochondria are surrounded by a double membrane. |
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| Involved in the synthesis of proteins. Some ribosomes are free in the crystol. Others are attached to the rough endoplasmic reticulum, which prepares proteins for export from the cell or insertion into the cell membrane. The smooth endoplasmic reticulum lacks ribosomes. |
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| The cell's processing, packaging, and secreting organelle. |
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| Contain hydrolytic enzymes that digest organic compounds, old cell parts, and other materials. |
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| Includes microfilaments and microtubules, strands of protein that help cells move and maintain their shape. |
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| They assist in cell movement. Both are made of nine pairs of micro-tubules arranged around a central pair. |
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| Surrounded by a double membrane and contains chromatin. |
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| A combination of DNA and protein. |
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| Stores hereditary information and directs the synthesis of RNA. |
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| Directs the synthesis of proteins in the cytosol. |
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| Contain three structures not found in animal cells: cell walls, vacuoles, and plastids. |
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| Covers the cell membrane in plant cells and provides support and protection. |
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| Large and fluid-filled, it stores enzymes and waste products within the plant cell. |
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| Store starch, fats, and pigments in plant cells. |
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| A type of plastid, it is the site where light energy is converted into chemical energy during photosynthesis. |
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| One of the two protein filaments in a muscle cell that function in contraction. |
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| A rigid structure that surrounds the cells of plants, fungi, many protists, and most bacteria. |
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| DNA and protein in a coiled, rod-shaped form that occurs during cell division. |
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| A short, hairlike organelle that extends from a cell and functions in locomotion or in the movement of substances across the cell surface. |
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| A fold of the inner membrane of mitochondria. |
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| The region of the cell between the cell membrane and the nucleus. |
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| The gelatinlike aqueous fluid that bathes the organelles on the inside of the cell membrane. |
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| A hairlike structure made up of microtubules that function in locomotion. |
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| A model of cell membrane structure representing the dynamic nature of membrane lipids and proteins. |
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| A protein embedded in the bilayer of the cell membrane. |
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| An organelle containing digestive enzymes, existing primarily in animal cells. |
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| A polymer chain of the protein actin; the smallest strand in the cytoskeleton. |
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| A hollowed tube of protein that constitutes the largest strand in the cytoskeleton. |
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| The organelle that is the site of aerobic respiration in eukaryotic cells. |
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| A double membrane that that surrounds the nucleus of a eukaryotic cell. |
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| The nuclear skeleton, a shape-maintaining protein. |
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| A small hole in the nuclear envelope through which substances pass between the nucleus and the cytoplasm. |
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| The structure in which ribosomes are synthesized and partially assembled. found in most nuclei. |
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| A protein attached to the interior or exterior surface of the cell membrane. |
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| An organelle of plant cells that contains starch, fats, or pigments. |
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| An organelle that functions in the synthesis of proteins. |
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| Rough Endoplasmic Reticulum |
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| The portion of the endoplasmic reticulum that contains attached ribosomes. |
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| Smooth Endoplasmic Reticulum |
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| The portion of the of the endoplasmic reticulum that lacks attached ribosomes. |
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| One of the microtubules that extend across a dividing eukaryotic; assists the movement of chromosomes. |
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| A flattened, membranous sac inside a chloroplast; contains most of the components involved in the light reactons of photosynthesis. |
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