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| 475258277 | organelles | Structures specialized to perform distinct processes within a cell. |  | 0 |
| 475258282 | cytosol | The soluble portion of the cytoplasm, which includes molecules and small particles, such as ribosomes, but not the organelles covered with membranes. |  | 1 |
| 475258283 | eukaryotic cells | Contain a nucleus and other organelles that are bound by membranes. |  | 2 |
| 475258284 | cytoplasm | The region of the cell between the cell membrane and the nucleus. |  | 3 |
| 475258285 | plasma membrane | The membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell's chemical composition. |  | 4 |
| 475258286 | nuclear envelope | double membrane perforated with pores that control the flow of materials in and out of the nucleus |  | 5 |
| 475258287 | nuclear lamina | A netlike array of protein filaments lining the inner surface of the nuclear envelope; it helps maintain the shape of the nucleus. |  | 6 |
| 475258288 | chromosomes | A threadlike, gene-carrying structure found in the nucleus. Consists of one very long DNA molecule and associated proteins. |  | 7 |
| 475258289 | chromatin | The readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins |  | 8 |
| 475258290 | nucleolus | Small, dense region within most nuclei in which the assembly of proteins begins. |  | 9 |
| 475258291 | endomembrane system | A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles. |  | 10 |
| 475258292 | vesicle | Small membrane-bound sac that functions in moving products into, out of, and within a cell. |  | 11 |
| 475258293 | smooth ER | Synthesis of lipids, phospholipids and steroid sex hormones-help detoxify drugs and poisons (liver cells). |  | 12 |
| 475258294 | rough ER | A network of interconnected membranous sacs in a eukaryotic cell's cytoplasm; covered with ribosomes that make membrane proteins and secretory proteins. |  | 13 |
| 475258295 | glycoprotein | A protein with one or more carbohydrates covalently attached to it. |  | 14 |
| 485181252 | transport vesicles | Vesicles in transit from one part of the cell to another. |  | 15 |
| 485181253 | Golgi apparatus | stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum |  | 16 |
| 485181254 | phagocytosis | Process in which extensions of cytoplasm surround and engulf large particles and take them into the cell. |  | 17 |
| 485181255 | lysosome | A cell organelle that contains digestive enzymes. |  | 18 |
| 485181256 | contractile vacuoles | A membranous sac that helps move excess water out of the cell. |  | 19 |
| 485181257 | mitochondria | The organelles in which nutrients are converted to energy. |  | 20 |
| 485181258 | chloroplasts | Organelles that capture the energy from sunlight and convert it into chemical energy in a process called photosynthesis. |  | 21 |
| 485181259 | peroxisome | A microbody containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide. |  | 22 |
| 485181260 | cristae | Infoldings of the inner membrane of a mitochondrion that houses the electon transport chain and the enzyme catalyzing the synthesis of ATP. |  | 23 |
| 485181261 | thylakoids | Membranous structures within a chloroplast that serve as the site for light harvesting in photosynthesis. |  | 24 |
| 485181262 | stroma | The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water. |  | 25 |
| 485181263 | cytoskeleton | Network of protein filaments within some cells that helps the cell maintain its shape and is involved in many forms of cell movement. |  | 26 |
| 485181271 | cytoplasmic streaming | the motion of cytoplasm in a cell that results in a coordinated movement of the cell's contents. |  | 27 |
| 485181272 | cell wall | Strong layer around the cell membrane in plants, algae, and some bacteria. |  | 28 |
