| A | B |
|---|
| cell | The basic unit of life. All organisms are cells or are made of cells. |
| cell membrane | The semi-permeable boundary between a cell and its environment |
| cell structure | A part of a cell with a specific job that enables an organism to carry out life’s functions |
| cell wall | A semirigid structure that surrounds cells of plants, fungi, and bacteria |
| chlorophyll | A green pigment in chloroplasts that captures light energy to make sugars during photosynthesis |
| chloroplast | An organelle containing chlorophyll, found in plant cells and some protists |
| compound microscope | An instrument used for viewing very small objects that has more than one lens |
| contractile vacuole | An organelle found mostly in protists that collects extra water in a cell and expels it |
| cytoplasm | The semifluid substance of a cell that the cell organelles reside in |
| endoplasmic reticulum | A network of membranous tubules within the cytoplasm of a eukaryotic cell, continuous with the nuclear membrane. It usually has ribosomes attached and is involved in protein and lipid synthesis. |
| eukaryote | An organism made of a cell or cells that contain a nucleus and organelles. All cells except bacteriaand archaea are eukaryotic. |
| evidence | Information gathered by observation or experimentation |
| field of view | The diameter of the circle of light seen through a microscope |
| function | The specific activity performed by an organ or part; the purpose of a behavior |
| growth | Increase in size of an organism |
| inference | An explanation or assumption that people make based on their knowledge, experiences, or opinions |
| scientific law | A statement, based on repeated experiments or observations, that describes or predicts a range of natural phenomena |
| microorganism | An organism so small that a microscope must be used to view it |
| mitochondria | An organelle in eukaryotic cells which converts glucose to energy |
| multicellular | An organism made of more than one cell. All multicellular organisms are eukaryotes |
| nonliving | Referring to something that has never been alive |
| nucleus | An organelle that regulates protein production and contains genetic material |
| organelle | Cellular structures inside the cell membrane of eukaryotic cells which perform specific functions |
| organism | An individual living thing, such as a plant, animal, fungus, bacterium, archaeon, or protist |
| ribosome | An organelle which synthesizes proteins in a cell. Found in all cell types. |
| theory | A well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. |
| vacuole | A space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid. |
