click below
click below
Normal Size Small Size show me how
7 Sci Ch 12
7th Grade Science Chapter 12
Question | Answer |
---|---|
COMPOUND LIGHT MICROSCOPE | MAGNIFIES BY ALLOWING LIGHT TO PASS THROUGH AN OBJECT THEN THROUGH TWO OR MORE LENSES. |
STEREOMICROSCOPE | TWO OCULAR LENSES AND A LARGE STAGE FOR OBJECTS TOO THICK FOR LIGHT TO PASS THROUGH. |
ELECTRON MICROSCOPE | BENDS BEAMS OF ELECTRONS IN A MAGNETIC FIELD AND CAN MAGNIFY IMAGES UP TO ONE MILLION TIMES OR MORE. |
CELL THEORY | MAJOR THEORY BASED ON OBSERVATIONS AND CONCLUSIONS BY MANY SCIENTISTS ABOUT CELLS. |
PROKARYOTIC | CELLS WITH NO MEMBRANE AROUND THEIR HEREDITARY MATERIAL. |
EUKARYOTIC | CELLS WITH A NUCLEUS AROUND THEIR HEREDITARY MATERIAL. |
CHROMATIN | LONG STRANDS OF HEREDITARY MATERIAL WITHIN THE CELL NUCLEUS THAT ARE MADE UP OF PROTEINS AND DNA. |
MICROTUBULE | TUBE SHAPED STRUCTURES IN CYTOPLASM THAT HELP CELLS MAINTAIN THEIR SHAPE AND ASSIST IN CELL DIVISION. |
LYSOSOME | ORGANELLE THAT CONTAINS DIGESTIVE ENZYMES THAT BREAK DOWN FOOD MOLECULES, CELL WASTES, AND WORN-OUT CELL PARTS. |
VESICLE | ORGANELLE IN A CELL THAT STORES WATER, WASTE, OR FOOD. |
ENDOCYTOSIS | PROCESS IN WHICH PARTICLES TOO LARGE TO CROSS THE CELL MEMBRANE ENTER THE CELL. |
EXOCYTOSIS | PROCESS IN WHICH LARGE PARTICLES LEAVE THE CELL. |