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Ch 2 Vocab - 6th gr
Vocabulary for Chap 2 Life Science - 6th Grade
| Term | Definition |
|---|---|
| microscope | tool that makes things look larger than they really are |
| lens | piece of curved glass or other clear material that causes light rays to come together or spread apart as they pass through |
| cell | basic unit of structure and function in living things |
| cell membrane | thin structure that surrounds a cell |
| cytoplasm | gel-like substance inside the cell where most of the cell's activities take place |
| nucleus (nuclei) | control center of a cell |
| nuclear membrane | thin structure that surrounds and protects the nucleus |
| organelle | small structure in cytoplasm that does a special job |
| mitochondrion (mitochondria) | structure that releases energy for a cell |
| endoplasmic reticulum | small network of tubes inside a cell that substance move along |
| ribosome | small, round structure that makes proteins |
| Golgi body | organelle that packages and sends materials to other places in the cell |
| vacuole | space in the cytoplasm stores the different substances a cell needs to survive |
| lysosome | small, round structure that breaks down nutrient molecules and old cell parts |
| cell wall | thick outer layer that surrounds the cell membranes of plants and some simple organisms |
| cellulose | carbohydrates, made up of man sugar molecules, that forms most of the cell wall of a plant cell |
| chloroplast | organelle in a plant cell that contains chlorophyll |
| chlorophyll | green material in chloroplasts that is needed by plants to make food |
| unicellular | containing only one cell |
| multicellular | containing more than one cell |
| pseudopod | fingerlike extension of the sytoplasm |
| guard cell | cell that controls the size of a stoma |
| stoma (stomata) | tiny opening in the upper or lower surface of a leaf |
| diffusion | movement of material from an area where molecule are crowded to an area where they are less crowded |
| passive transport | movement of materials through a membrane without the use of energy |
| osmosis | movement of water through a membrane |
| active transport | movement of materials through a membrane using energy |
| energy | the ability to do work or cause change |
| photosynthesis | food-making process in plants and other organism that uses sunlight |
| glucose | a simple type of sugar |
| fermentation | process by which a cell releases energy from food without using oxygen |
| chromosome | cell part that determines what traits a living thing will have |
| chromatin | threadlike material that makes up a chromosome |
| mitosis | division of the nucleus |
| daughter cell | new cell produced by cell division |
Created by:
turnereagles
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