#Question id: 2441
#Unit 2. Cellular Organization
Which of the following statement(s) is (are) true of microtubule assembly?
a. GDP-tubulin normally assembles into microtubules.
b. Microtubule (-) ends grow faster than microtubule (+) ends.
c. Tubulin subunits assemble to form a protofilament.
d. Microtubules consist of multiple protofilaments.
e. Microtubules with a GTP cap will shorten.
#Question id: 2442
#Unit 2. Cellular Organization
The drug colchicine acts to
a. promote microtubule assembly.
b. inhibit microtubule assembly.
c. sever microtubules.
d. block cell division.
e. cap microtubule ends.
#Question id: 2443
#Unit 2. Cellular Organization
Microtubule-associated proteins
a. typically co-localize with microtubules inside cells.
b. are divided into two types: those that stabilize microtubules and those that destabilize microtubules.
c. typically co-purify with microtubules.
d. are similar to α- and β-tubulin.
#Question id: 2444
#Unit 2. Cellular Organization
Kinesin I moves vesicles
#Question id: 2445
#Unit 2. Cellular Organization
All members of the kinesin family of motor proteins
#Question id: 2446
#Unit 2. Cellular Organization
The dynactin protein complex serves to
a. link vesicles and chromosomes to cytosolic dynein light chains.
b. link axonemal dynein to B tubules.
c. enhance the processivity of cytosolic dynein.
d. mediate microtubule attachment to centrosomes.
e. attach kinesin to vesicles.