#Question id: 2448
#Unit 2. Cellular Organization
Axonemal dynein
a. may contain two or three head domains.
b. attaches to a B tubule through its base domain.
c. consists of heavy, intermediate and light chains.
d. is a (-) end-directed motor.
e. is an ATPase.
#Question id: 2449
#Unit 2. Cellular Organization
What is the correct order of the stages of mitosis?
a. anaphase
b. metaphase
c. telophase
d. prophase
e. prometaphase
#Question id: 2450
#Unit 2. Cellular Organization
Which of the following contribute(s) to pole separation during anaphase B?
a. cytosolic dynein
b. a (-) end-directed kinesin
c. CENP-E
d. microtubule depolymerisation
e. microtubule polymerization
#Question id: 2451
#Unit 2. Cellular Organization
The average lifetime of microtubules during mitosis is
#Question id: 2452
#Unit 2. Cellular Organization
Intermediate filaments
a. are typically 6 nm in diameter.
b. are essential for cell motility.
c. may be used to diagnose the tissue of origin for many cancers.
d. are composed of globular subunits.
e. are formed from tetrameric subunits.
#Question id: 2453
#Unit 2. Cellular Organization
Keratins
a. are found in the nucleus.
b. are typically expressed in neuronal cells.
c. contain an acidic and a basic subunit.
d. function in cell adhesion.
e. are the major proteins of hair and horns.