| Term | Definition |
|---|
| nucleus | large, round structure usually located near the center of the cell. It is the control center for all activities in the cell. |
| cell membrane | thin, flexible envelope that surrounds the cell. It allows the cell to change shape and controls what goes in and out of the cell. |
| endoplasmic reticulum | consists of a network of tube-like passageways that proteins from ribosomes are transported through. |
| ribosomes | small grain-like bodies made mostly of RNA. The RNA is produced in the nucleolus. Proteins are constructed here. |
| nucleolus | small, dense object found in the middle of the nucleus. It makes the RNA for the cell. |
| cytoplasm | jelly-like area between nucleus and cell membrane. It helps organelles move throughout the cell. |
| mitochondria | tiny bean-shaped structures in cytoplasm, has a smooth outer membrane and a greatly folded inner membrane. They supply the energy for the cell by transforming sugars into energy. |
| chromosomes | rod-shaped bodies found in the nucleus. They are made of DNA and protein. They contain all the information to run the cell and pass on the hereditary traits of the cell to new cells. |
| chloroplast | oval, green structure found in cytoplasm. It contains chlorophyll and captures the sun's energy, using it to produce sugars in photosynthesis. |
| lysosomes | small, round structures found in cytoplasm. They contain digestive enzymes that break down large food particles into sugars and other simple substances. |
| vacuole | large, round sac found in cytoplasm. It stores water, food, wastes, other materials needed by the cell. |
| golgi bodies | are used for packaging and secreting of energy |
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