Final old test complete option part 3 Flashcards
1
Q
- Vesicles that carry proteins from the ER to the Golgi are
A
a. COPII-coated
2
Q
- Major molecule of vesicle fusion. Target membrane driven by interaction call vesicle & target
A
a. SNARES
3
Q
- Lysosomes contain 60 enzymes that are degradable…if you have an enzyme deficiency, you have _________________, leading to hydrolysis of gluycosylceramide to glucose and ceramide (toxic)
A
a. Gaucher’s disease
4
Q
- Actin exists in cells in two major forms: __________ and _______
A
a. F-actin and G-actin (fibrous and globular)
5
Q
- Branching of actin filaments is initiated by
A
a. Arp2/3
6
Q
- Actin filaments bound into bundles of parallel filaments by _________
A
a. α-actin and fimbrin
7
Q
- In actin filament assembly, monomers added to barbed end and then removed from pointed end are in a process called ______________
A
a. Treadmilling
8
Q
- Muscle contraction in A-band ________
A
a. Stays the same width, I and H band shorten.
9
Q
- Myosin ______ is present in muscle sarcomeres.
A
a. II
10
Q
- Microtubules are assembled from _____________
A
a. Dimers of α and β tubulin
11
Q
- Which nucleotide triphosphate is hydrolyzed during a cycle of microtubule assembly & disassembly?
A
a. GTP (nucleotide triphosphate)
12
Q
- Microtubules rapidly depolymerizing and growing is a process called ________________
A
a. Dynamic instability
13
Q
- Major microtubule-organizing centers is _____________
A
a. Centrosome
14
Q
- The role of centrosomes ______________
A
a. Initiate microtubule growth
15
Q
- Microtubules overlap in the center of the mitotic spindle called the ___________ area
A
a. Polar
