BIOL 3090 study guide Chapters 18 and 19

Chapter 18

18.1 actin cytoskeleton

Actin, G-actin and F-actin Figure 18-1, Figure 18-2, 18-3, 18-4, t

Cross-linking proteins Table 18-1, Figure 18-7, 18-8

18.2 actin assembly

polymerization of actin Figures 18-11, 18-13

movements caused by microfilament formation Figures 18-17, 18-19

18.3 Myosin

myosin I, myosin II and myosin V Figures 18-20, 18-21

Evidence for myosin attachment and movement Figure 18-22, 18-25

18.4  Muscle

Myofibril structure Figure 18-26

Sarcomere Figures 18-27, 18-28

Muscle contraction - roles of tropomyosin and Ca⁺² Figures 18-31, 18-32, 18-33

18.5 Actin and myosin in non-muscle cells

Cytokinesis Figures 18-37, 18-38

cytoplasmic streaming Figure 18-40

18.6  Cell Locomotion

epidermal cell movement Figure 18-41, 18-42

Questions 1-3, 5-9, 11-15

Chapter 19 

19.1 Microtubules

What are microtubules?  What proteins make up microtubules? Figures 19-1, 19-2, 19-3, 19-4

microtubule organizing centers 19-6, 19-7*

19.2 Microtubule dynamics

polarity Figure 19-10

assembly and disassembly Figures 19-11, 19-12

GTP cap Figures 19-11, 19-15

colchicine and taxol Figure 19-16

MAPs (Table 19-1)

19.3 Molecular motors

Kinesin goes to the (+) end of the microtubule Figures 19-19, 19-20*, 19-21

Kinesin structure Figures 19-23, 19-24

Dynein goes to the (-) end of the microtubule Figures 19-25, 19-26, Table 19-2

19.4 Flagellar structure

Flagella movement Figures 19-27, 19-29, 19-31

19.5 Role of microtubules in mitosis

microtubules and mitosis, kinetochore, centrosome, spindle pole body

Know the orientation of the microtubules

Figures 19-35, 19-37

Polymerization and depolymerization Figures 19-39, 19-42, 19-43, 19-44, 19-45, 19-46

19.6 Intermediate filaments

Types of filaments Table 19-3

Questions 1, 3, 5-9, 11-14