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Science Grade 7
Cells & Organelles
| Question | Answer |
|---|---|
| microscope | an instrument that makes small objects look larger |
| resolution | the ability to clearly distinguish the individual parts of an object |
| mitochondrion | rod-shaped cell structures that produce most of the energy needed to carry out the cell's functions |
| vacuole | a water-filled sac inside a cell that acts as a storage are |
| ribosome | a tiny structure in they cytoplasm of a cell where protiens are made |
| nucleolus | where ribosomes are made |
| compound microscope | a light microscope that has more than one lens |
| convex lens | a curved lens in which the center is thicker than the edges |
| chloroplast | a structure in cells of plants and some other organisms that captures energy from sunlight and uses it to produce food |
| cell membrane | the outside boundary if a cell; controls which substances can enter or leave the cell |
| nuclear membrane | protects the nucleus |
| Golgi body | a structure in a cell that receives protiesn and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell. |
| cell theory | a widely accepted explanation of the relationship between cells and living things |
| cell wall | a rigid layer of nonliving material that surrounds the cells of plants and some other organisms. |
| lysosome | a small round cell structure that contains chemicals that break down large food particles into smaller ones |
| cytoplasm | the region of a cell located inside the cell membrane (in prokaryotes) or between the cell membrane and nucleus (in eukaryotes); contains a gel-like material and cell organelles. |
| magnification | the ability to make things look larger than they are |
| organelle | a tiny cell structure that carries out a specific function within a cell |
| endoplasmic reticulum | a cell structure that forms a maze of passageways in which protiens and other materials are carried from one part of the cell to another |
| nucleus | the control center of a cell that directs the cell's activites; contains the chemical instrutions that direct all the cell's activities and deterine the cell's characteristics |
| chromatin | material in cells that contains DNA and carries genetic information |
Created by:
smuehleisen
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