| A | B |
|---|
| organelles | each is designed for special function |
| cytoplasm | area between membrane and nucleus |
| cytosol | gel-like substance that surrounds organelles in cytoplasm |
| mitochondria | synthesis of ATP; found in liver; has 2 membranes and own DNA |
| ATP | adenosine triphosphate (energy source of cell) |
| eukaryotes | membrane-bound organelles |
| mitochondria boundaries | inner (folds called cristae) and outer (between mitochondria and cytosol) |
| folds | provide larger surface area for ATP production |
| production of mitochondria | new mitochondria are produced from existing mitochondria |
| endosymbiosis | scientists use this theory to describe evolution of mitochondria |
| evolution of mitochondria | may have evolved from prokaryote cells that took refuge in eukaryote cells |
| Ribosomes | most numerous organelles in the cell, made in nucleus; contain RNA and proteins |
| Where ribosomes located | some are floating free, others are embedded in another organelle |
| Ribosomes in cytosol | used to produce proteins that are used by the cell |
