Download unit ii study guide key

UNIT III STUDY GUIDE KEY
Cell Structures
1. nuclear envelope
2. rough ER
3. tonoplast
4. lysosomes
5. cell membrane
6. chloroplasts
7. microtubules
8. plasmodesmata
9. ribosomes
10. peroxisomes
11. Golgi apparatus
12. cytosol
13. thylakoids
14. intermediate filaments
15. nucleus
16. mitochondria
17. cell wall
18. smooth ER
19. vacuole
20. granum
21. chromatin
22. microfilaments
23. pores
24. nucleolus
25. centrioles
26. chromatin, ribosomes, cytosol, cell membrane, cell wall
Cell Transport, Tonicity, & Water Potential
1. hypotonic
2. hypotonic
3. ΨS = -iCRT = - (1)(0.5)(0.0831)(297) = - 12.34
4. ΨS = -iCRT = - (2)(0.5)(0.0831)(297) = - 24.68
5. Ψ = - 0.2 MPa
6. Into the cell
7. ΨP = 0.2
8. no net movement of water
9. all are 0
10. isotonic
11. hypotonic
12. Not to use seawater . . . will pull water out of plants due to lower water potential
13. Fish would be placed in hypertonic environment → would lose water to surroundings
14. large polar molecule
15. less than; the same as
16. hypertonic
17. a. Ψ plant cells > Ψ soil
b. solute concentration in soil > solute concentration in plant cells
c. ΨS soil < ΨS plant cells
18. isotonic
19. a
20. e
Cell Membrane Structure & Function
Hydrophilic region of integral protein – D
Hydrophobic region of integral protein – C
 Proteins involved in cell transport, cell signaling, enzyme activity, cell junctions
Glycolipid – B
Glycoprotein – E
 Form “ID tags” of a cell; allow for self-to-self recognition
Cholesterol – F
 Provides stability to animal cell membrane
Peripheral protein – G
 Enzyme activity, attachment point for cytoskeleton components
Phospholipid bilayer – A
 Maintains homeostasis in cell; amphipathic; selectively permeable