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Cells
| Term | Definition |
|---|---|
| Cell | The basic unit of structure in a living thing |
| Microscope | An instrument that makes small objects look larger |
| Cell theory | A wildly accepted explanation in the relationship between cells and living things |
| Cell wall | A rigid supporting layer that surrounds the cell |
| Cell membrane | A thin flexible layer that surrounds a cell |
| Nucleus | a large oval that contains DNA |
| Organelle | A type of cell structure that carries out a specific funcion |
| Ribosome | A small grain shape Organnlle that makes protein |
| Cytoplasm | The thick fluid region of a cell located inside the cell membrane |
| Mitochondria | Rod shaped organelles that convert energy in food molecules to energy the cell can use |
| Endoplasmic Reticulm | An Organnlle that makes a maze in which proteins are carried from one place to another |
| Golgi apparatus | An Organelle in a cell that receives proteins |
| Vacuole | A sac like Organelle that stores water and food |
| Chloroplast | An Organelle in the cells of plants that captures energy from sunlight |
| Lysosome | A cell Organelle which contains chemicals that break down food particals |
| Multicellular | Consisting of many cells |
| Unicellular | Made of a single cell |
| Tissue | A group of similar cells that do the same funtion |
| Organ | A body structure that is composed of different kinds of tissues that work togeather |
| Organ system | A group of organs that work togeather to preform a major function |
| Element | A pure substance that cannot be broken down by any chemicals |
| Compound | A substance made of two or more elements chemically combined |
| Carbohydrate | An energy rich organic compound such as sugar or starch that is made up of the elements oxygen, carbon, and hydrogen |
| Lipid | An energy rich organic compound such as fat oil or wax that is made of oxygen, carbon, and hydrogen |
| Protein | Large organic molecule made of carbon, hydrogen, oxygen and sometimes sulfur |
| Enzyme | A type of protein that speeds up a chemical reaction in a living thing |
| Nucleic acid | A very large organic molecule made of carbon, oxygen, hydrogen,nitrogen, and phospherus that carry the instructions that the cells need to carry out life |
| DNA | the genetic material that caries infromation about an organism and passes down from parent to offspring |
| Double helix | The shape of a DNA molecule |
| selectively prmiable | A property of cell membrane that allows some substances to pass but others can't |
| passive transport | The movement of dissolve materials across a cell membrane without celular energy |
| diffusion | The process by which molecules move from a higher to a lower concentration |
| osmosos | The diffusion of water molecules across a selectively periable membrane |
| active transport | the movement of materials across a cell membrane using celular energy |
| endocytosis | The process by which the cell membrane takes particle into the cells |
| exocytosis | the process which the vacuole fuses with the cell membrane |
Created by:
alefer003