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Eukaryotic Cells
| Term | Definition |
|---|---|
| Nucleus | contains the cell's DNA |
| Nucleolus | dense region in the nucleus where the assembly of ribosomes begin |
| Ribosomes | small particles of RNA and protein found throughout the cytoplasm. Where proteins are assembled |
| Endoplasmic Reticulum | site where lipid components of cell membrane are assembled, and proteins and other materials are exported from the cell. Rough and smooth, ribosomes make it rough |
| Rough ER | involved in synthesis of proteins |
| Smooth ER | enzymes aid in synthesizing lipid membranes and detoxifying drugs |
| Golgi Apparatus | modifies, sorts, and packages proteins and other materials from the ER for storage or secretion outside the cell |
| Lysosomes | small organelles filled with enzymes to break down molecules and other organelles in cell that are no longer needed. They "clean" the cell |
| Vacuole | sack-like structure used for storage (water, salts, proteins, carbs) in plants, it pumps excess water out of cells to maintain homeostasis |
| Mitochondria | organelles that convert energy (food) into a usable form. Inherited from mother |
| Chloroplasts | organelles that capture sunlight and convert it to the energy that mitochondria use. (photosynthesis). Original solar cell |
| Cytoskeleton | network of protein filaments that helps the cell maintain its shape and support and move the cell. Made of microfilaments and microtubules |
| Microfilaments | Threadlike structures made of actin (protein). Form a tough, flexible framework that supports the cell and helps it move |
| Microtubules | hollow structure made up of tubulins (protein). Maintain cell shape and cell division, form the mitotic spindle. in animal cells, used to form centrioles |
| Cell wall | All plant cells have this. Outside the cell membrane and provides protection and structure. On a day to day basis, it's called wood, paper, or cellulose |
| Cell Membrane | consists of phospholipid bilayer. There are proteins within that act as straws that allow molecules to pass through. Some allow water, some glucose, and others control NA and Cl |