Chapter 4 & 5 Review

4. ________ proteins are formed by free ribosomes (think location, what type of proteins would free ribosomes create)
7. ________ ER is responsible for initiation of synthesis of proteins that will be secreted by the cell
10. only found in plant cells, examples include chloroplast, amyloplast, chromoplast
11. only found in plant cells, water & small molecules can pass from cell to cell
13. requires energy, molecules moving from low to high concentration
14. ________ ER is involved with detoxification and is the primary site of oils, phospholipids and steroid synthesis
15. passive process, molecules move from a region of high to low concentration
17. most similar to plasmodesmata, channels that run between membrane protein pores
18. state in which animal cells are normal
21. ________ diffusion, molecules move from high to low concentration but with help from a protein
22. state in which plant cells are normal (turgid)

1. hold neighboring cells firmly together
2. the type of cells bacteria and archaea are
3. the direction that phospholipids can move within the bilayer
5. prevent substances from moving through spaces between cells
6. membranous sac containing hydrolytic enzymes to digest macromolecules
8. component of cytoskeleton, acts as a highway within cell
9. type of fatty acid that helps keep the membrane more fluid at lower temperature
12. contains both hydrophilic and hydrophobic regions
16. _______ water, highly purified water created through a process of boiling and condensing water
19. ________ signaling, secreted signal molecule only travel short distances and influence cells in the immediate vicinity
20. _______ theory that early ancestor of eukaryotic cells engulfed another cell