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Cells
Term | Definition |
---|---|
Nucleus | Information center for cell- Eukaryotes have a nucleus but prokaryotes do not- The nucleus contains nearly all of the cells DNA.- Brain of the cell- Houses all the genetic material such as chromatin and chromosomes. |
Nuclear Envelope | Covering around the nucleus that helps protect the nucleus. |
Nuclear pores | Allows certain things into the nucleus and certain things out of the nucleus. |
Nucleolus | Found inside the nucleus. Produces ribosomes. |
Cytoplasm | Outside of the nucleus, cell fluid. Suspends the organelles within the fluid. Jelly-like substance. |
Ribosomes | Made of RNA and proteins. They are the ones that produce protein. |
Rough endoplasmic reticulum- Rough ER | Network of membranes to which ribosomes attach-package molecules and make membranes and proteins. |
Smooth endoplasmic reticulum- Smooth ER | Membrane network involved in the making of lipids, cholestrol, and fats. |
Golgi apparatus | Prepare and store proteins for secretion. In this organelle you might see the processing of a protein, where enzymes may attach carbohydrates or lipids. |
Lysosomes | Clean-up crews. Filled with chemicals and enzymes. Lysosomes can break down almost any substance within the cell. Site of digestion- gets rid of waste. |
Cytoskeleton | Internal beam of supportive outer skeleton made of microtubules and microfilmaments to supprt the cell and give it shape. This will also be the area where you will see the cilia and flagella- which will provide the movement of the cell. |
Vacuoles | Storage center- In animals, can store protein, fats, and carbohydrates. In a plant, the central vacuole often stores water and dissolved salts. Vacuoles also provide pressure to the plant cells so that it can grow quickly. Vacuoles in general store food a |
Mitochondria | Powerhouse of the cell. Provides energy for the cell. Site of cellular respiration. |
Chloroplast | Harvest sunlight into energy. Found in plant cells. Site of photosynthesis. Food for plant cells starts here. |
Centrioles | Involved in cell division in animal cells. Assist in cell reproduction. |
Cell membrane | Controls entry into and out of cell- controls movement and is selective in what can enter and leave the cell. |