ch 7 sect 2
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Created by:
cmurray11 on January 21, 2010
Subjects:
Biology, prentice hall biology
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15 terms
Terms | Definitions |
|---|---|
 "little organs"- specialized structure that performs important cellular functions within a eukaryotic cell. | organelles |
| material inside the cell membrane—not including the nucleus | cytoplasm |
| layer of two membranes that surrounds the nucleus of a cell. It is dotted with nuclear pores, which allow materials to move in and out of the nucleus. | nuclear envelope |
| granular material visible within the nucleus; consists of DNA tightly coiled around proteins | chromatin |
| threadlike structure within the nucleus; containing the genetic information that is passed from one generation to the other | chromosome |
| small, dense region within most nuclei in which the assembly of proteins begins | nucleolus |
| small particle in the cell on which proteins are assembled; made of RNA and protein. | ribosome |
| internal membrane system in cells in which lipid components of the cell membrane are assembled and some proteins are modified | endoplasmic reticulum |
| stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum | Golgi apparatus |
| cell organelle filled with enzymes needed to break down certain materials in the cell (such as lipids, carbohydrates, & protiens) into small molecules that can then be used by the rest of the cell, or removed from the cell (a junk remover). | lysosome |
| cell organelle that stores materials such as water, salts, proteins, and carbohydrate | vacuole |
| cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use | mitochondrion |
| organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy | chloroplast |
| network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement. Microfilaments & microtubules are part of the cytoskeleton. | cytoskeleton |
| one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope. Formed from tubulins. These help organize cell division & are not found in plant cells. | centriole |
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