| A | B |
|---|
| Mitochondria | Site of ATP formation |
| Ribosome | Site of Protein Synthesis |
| Rough Endoplasmic Reticulum(cisternae) | protein modification |
| Rough Endoplasmic Reticulum (external face) | phospholipid and cholesterol synthesis |
| Smooth Endoplasmic Reticulum | synthesize lipids and steroid molecules; acts in fat metabolism and drug detox; in muscles = calcium depot |
| Golgi Apparatus | packages protein secretions for export; enzymes into lysosomes for cellular use; modifies proteins that will become part of the membrane |
| Lysosomes | site of intracellular digestion; degrade worn out organelles and tissues; release ionic calcium from bone |
| Peroxisomes | protect cell from destructive effects of free radicals and other toxin by converting them to hydroen peroxide and H20 |
| Microfilaments | important in cell motility or mvmt of cell parts |
| Microtubules | organize the cytoskelton; impt in intracellular transport |
| Intermediate Filaments | help cells resist mechanical stress and connect other elements |
| Centrioles | form the mitotic spindle ; basis of cilia and flagella |
| Nucleus | control center of cell |
