UNIT III STUDY GUIDE KEY
Cell Structures
1. nuclear envelope 14. intermediate filaments
2. rough ER 15. nucleus
3. tonoplast 16. mitochondria
4. lysosomes 17. cell wall
5. cell membrane 18. smooth ER
6. chloroplasts 19. vacuole
7. microtubules 20. granum
8. plasmodesmata 21. chromatin
9. ribosomes 22. microfilaments
10. peroxisomes 23. pores
11. Golgi apparatus 24. nucleolus
12. cytosol 25. centrioles
13. thylakoids 26. chromatin, ribosomes, cytosol, cell membrane, cell wall
Cell Structure Identification
A. Animal cell
B. Bacterial cell
C. Plant Cell
1. DNA
2. Nucleolus
3. Nuclear envelope
4. Pore
5. Nucleus
6. Lysosome
7. Smooth endoplasmic reticulum
8. Golgi apparatus
9. Rough endoplasmic reticulum
10. Ribosome
11. Cytosol
12. Cell membrane
13. Mitochondria
14. Cytoskeleton
15. Centrioles
16. Vacuole
17. Cell wall
18. Fimbriae
19. Flagella
20. Chloroplast
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