Terms : Hide Images
| 13531521362 | active transport | Energy-requiring process that moves material across a cell membrane against a concentration gradient |  | 0 |
| 13531539648 | amphipathic | having both a hydrophilic region and a hydrophobic region |  | 1 |
| 13531548160 | apoptosis | programmed cell death |  | 2 |
| 13531559539 | aquaporin | A membrane protein, specifically a transport protein, that facilitates the passage of water through channel proteins. |  | 3 |
| 13531566335 | axon | A threadlike extension of a neuron that carries nerve impulses away from the cell body. |  | 4 |
| 13531570699 | carrier protein | a protein that transports substances across a cell membrane |  | 5 |
| 13531573136 | cell wall | A rigid layer of nonliving material that surrounds the cells of plants and some other organisms. |  | 6 |
| 13531578018 | centrioles | Cell organelle that aids in cell division in animal cells only |  | 7 |
| 13531580947 | channel protein | A membrane protein, specifically a transport protein, that has a hydrophilic channel that certain molecules or atomic ions use as a tunnel. |  | 8 |
| 13531584353 | chloroplast | An organelle found in plant and algae cells where photosynthesis occurs |  | 9 |
| 13531587960 | concentration gradient | A difference in the concentration of a substance across a distance. |  | 10 |
| 13531591577 | cytoplasm | A jellylike fluid inside the cell in which the organelles are suspended |  | 11 |
| 13531594950 | cytoskeleton | A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement |  | 12 |
| 13531597340 | dendrites | Branchlike parts of a neuron that are specialized to receive information. |  | 13 |
| 13531604382 | Depolarization | The process during the action potential when sodium is rushing into the cell causing the interior to become more positive. |  | 14 |
| 13531608140 | diffusion | Movement of molecules from an area of higher concentration to an area of lower concentration. |  | 15 |
| 13531610980 | endocytosis | process by which a cell takes material into the cell by infolding of the cell membrane |  | 16 |
| 13531614384 | endoplasmic riticulum | An organelle that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another. |  | 17 |
| 13531622783 | Golgi apparatus | stack of membranes in the cell that modifies, sorts, and packages proteins from the endoplasmic reticulum |  | 18 |
| 13531625945 | hypertonic | when comparing two solutions, the solution with the greater concentration of solutes |  | 19 |
| 13531630607 | hypotonic | when comparing two solutions, the solution with the lesser concentration of solutes |  | 20 |
| 13531633232 | isotonic | when the concentration of two solutions is the same |  | 21 |
| 13531637707 | ligand | A molecule that binds specifically to a receptor site of another molecule. |  | 22 |
| 13531641997 | lysosome | cell organelle filled with enzymes needed to break down certain materials in the cell |  | 23 |
| 13531644713 | membrane | phospholipid bilayer that surrounds cells and organelles |  | 24 |
| 13531657048 | mitochondrion | Cell organelle that converts the chemical energy stored in food into compounds that are more convenient for the cell to use |  | 25 |
| 13531660739 | neuron | a specialized cell transmitting nerve impulses; a nerve cell. |  | 26 |
| 13531664807 | neurotransmitter | chemical messengers that cross the synaptic gaps between neurons |  | 27 |
| 13531695886 | nuclear envelope | layer of two membranes that surrounds the nucleus of a cell |  | 28 |
| 13531702696 | phospholipid | a lipid that contains phosphorus and that is a structural component in cell membranes |  | 29 |
| 13531709895 | plasma membrane | A selectively-permeable phospholipid bilayer forming the boundary of the cells |  | 30 |
| 13531714438 | plasmolysis | Collapse of a walled cell's cytoplasm due to a lack of water |  | 31 |
| 13531719520 | Polarization of neuron | Unstimulated neuron is polarized, having more electrical charge outside than inside Established by maintaining excess Na+ ions on the outside and excess K+ ions on the inside Other large, negatively charged proteins and nucleic acid play a key role in maintaining the overall negative charge inside the neuron | 32 | |
| 13531742115 | prokaryotic cell | cell that does not have a nucleus or other membrane-bound organelles. |  | 33 |
| 13531760724 | Repolarization | Return of the cell to resting state, caused by reentry of potassium into the cell while sodium exits the cell. |  | 34 |
| 13531763952 | ribosome | site of protein synthesis |  | 35 |
| 13531767884 | rough ER | That portion of the endoplasmic reticulum studded with ribosomes. |  | 36 |
| 13531771996 | selectively permeable | a property of cell membranes that allows some substances to pass through, while others cannot |  | 37 |
| 13531776269 | smooth ER | That portion of the endoplasmic reticulum that is free of ribosomes; makes lipids |  | 38 |
| 13531780999 | synapse | the junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron |  | 39 |
| 13531784705 | exocytosis | a process by which the contents in a cell are released to the exterior through fusion of the vacuole membrane with the cell membrane. |  | 40 |
| 13531789644 | eukaryotic cell | cell that has a nucleus and other membrane-bound organelles |  | 41 |
| 13531794371 | facilitated diffusion | Movement of specific molecules across cell membranes down their concentration gradient through protein channels |  | 42 |
| 13531800732 | flagella | whiplike tails found in one-celled organisms to aid in movement |  | 43 |
| 13531815295 | fluid mosaic model | The currently accepted model of cell membrane structure, which envisions the membrane as a mosaic of individually inserted protein molecules drifting laterally in a fluid bilayer of phospholipids. |  | 44 |
| 13531818012 | nucleus | A part of the cell containing DNA and RNA and responsible for growth and reproduction |  | 45 |
| 13531820731 | organelles | A tiny cell structure that carries out a specific function within the cell |  | 46 |
| 13531823796 | osmosis | Diffusion of water through a selectively permeable membrane |  | 47 |
| 13531828503 | passive transport | the movement of substances across a cell membrane without the use of energy by the cell |  | 48 |
| 13531835903 | phagocytosis | A type of endocytosis in which a cell engulfs large particles or whole cells |  | 49 |
| 13531839746 | surface area to volume ratio | a variable that decreases as cells grow, so that it sets a limit to the size of cells. |  | 50 |
| 13531842845 | transmembrane protein | An integral membrane protein that spans the phospholipid bilayer. |  | 51 |
| 13531846829 | vacuole | Cell organelle that stores materials such as water, salts, proteins, and carbohydrates |  | 52 |
