| A | B |
|---|
| magnify | to make an object look larger than it is |
| simple microscope | a microscope containing only one lens, essentially a magnifying glass |
| compound microscope | a microscope containing two lenses that work together to magnify objects |
| objective lens | the lower of the two lenses in a compound microscope |
| ocular lens | the eyepiece, or upper lens, in a compound microscope |
| diaphragm | a plate located under the stage of the microscope, with an adjustable opening for regulating the amount of light that falls on the stage |
| stage | the platform on which the slide rests held by the stage clips |
| stereo microscope | a 3-D microscope, with two eyepieces, that is used to study small objects |
| cell | the basic unit of a living organism that can perform all of the processes associated with life |
| cytoplasm | a jelly-like substance that makes up all of the living material in a cell except for the nucleus |
| nucleus | the control center of the cell's activities |
| organelles | the nucleus and other parts of the cell that float in the cytoplasm and perform specific functions for the cell |
| cell membrane | a thin structure that encloses the cytoplasm of animal and plant cells. It allows materials such as food, water, and gases to pass into and out of the cell |
| cell wall | the rigid structure outside of the cell membrane of a plant cell; provides support and protection |
| chloroplast | a chlorophyll containing organelle found in plant cells and some protists; used to make food through photosynthesis |
| contractile vacuole | expels excess water from the organism |
| food vacuole | stores and digests food in a microorganism |
| microorganism | any life form of microscopic size |
| amoeba | single celled microorganism that uses pseudopods for locomotion and ingestion of food |
| pseudopods | "false foot" like projection that facilitates movement and ingestion in single celled microorganisms |
| paramecium | single celled microorganism that uses cilia for locomotion and ingestion of food |
| cilia | tiny, hair-like structures that facilitate movement and help trap food |
| gullet | the tube that leads to food vacuoles of a paramecium |
| anal pore | releases indigestible wastes from a paramecium |
| oral groove | a channel, in the body of a paramecium, that food particles are swept into by cilia |
| euglena | single celled microorganism that uses a flagellum to move and contains a chloroplast for making food |
| flagellum | whip-like tail that facilitates movement |
| eyespot | (red) helps direct the euglena by swimming toward the light |
