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science test 10/5/08
cells
| Question | Answer |
|---|---|
| microvilli | found on surface of some cells/helps increase total surface area for absorbing materials |
| cell membrane | outermost structure of a cell/controls what enters and exits the cell |
| nuclear envelope(membrane) | outerlining of nucleus/controls what passes through its pores |
| nucleus | large organelle in eukaryotic cells/contains DNA, contains info about how to make proteins |
| nucleolus | dark area in nucleus/begins to create ribosomes |
| cytoplasm | right in front of cell membrane, jellylike structure where inner structures(organelles) are held and stored in, place where many cells build materials |
| endoplasmic reticulum (ER) | network of winding canals used to store things, materials are made |
| ribosomes | structures that make proteins, smallest organelles |
| golgi body(complex) | in cytoplasm, sacs that store, pack, and transport materials and cytoplasm, package and distribute proteins |
| mitochondria | main power source of cell, breaks sugar down to release energy, have 2 membranes, energy stored in ATP on inner membrane, have own DNA, can divide |
| vacuole | stores water, wastes, or food |
| lysosome | sac of digestive enzymes which breaks down food material |
Created by:
angiesthompson
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