age 1 of 324
MCB 150 FINAL EXAM COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS || 100%
GUARANTEED PASS <LATEST VERSION>
Which of the following drugs works by stabilizing microtubules
rather than blocking their formation?
A. Taxol
B. Vinblastine
C. Colchicine
D. Vincristine
E. Colcemid .......Answer.........A. Taxol
Which one of the following statements about microtubules is
correct?
,age 2 of 324
A. Tubulin dimers with nucleoside diphosphates in their nucleotide
binding site(s) have a lower affinity for each other than tubulin
dimers with nucleoside triphosphates in their nucleotide binding
site(s).
B. In vivo, polymerization of microtubules typically occurs at the
minus end because the plus end is anchored.
C. Myosin is a motor protein that moves toward the plus end of
microtubules.
D. Only the alpha subunit of a tubulin dimer has a nucleotide
binding site.
E. ATP is the nucleotide that occupies the nucleotide binding
site(s) of tubulin dimers. .......Answer.........A. Tubulin dimers with
nucleoside diphosphates in their nucleotide binding site(s) have a
,age 3 of 324
lower affinity for each other than tubulin dimers with nucleoside
triphosphates in their nucleotide binding site(s).
Which of the following is a property of microtubules, but not of
actin?
A. In vitro, both ends can show dynamic growth
B. Can be used for vesicle transport
C. Subunits are dimeric
D. Can form stable arrangements to support cell projections
E. Polarity at filament ends .......Answer.........C. Subunits are
dimeric.
Microtubule subunits (tubulin) are dimeric, while actin filament
subunits (G-actin) are monomeric.
, age 4 of 324
Identify if the following statements regarding microtubule
function in a cell are true or false.
Choices: True, False.
1. Microtubules are completely unchanging, stable structures.
2. Cilia are extensions of cytoplasm stabilized by microtubules.
3. During interphase, microtubules typically do not reach the cell
membrane.
4. Microvilli are the same as flagella. .......Answer.........1. False
2. True
3. True
4. False
Decide if the following statements are true or false.
MCB 150 FINAL EXAM COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS || 100%
GUARANTEED PASS <LATEST VERSION>
Which of the following drugs works by stabilizing microtubules
rather than blocking their formation?
A. Taxol
B. Vinblastine
C. Colchicine
D. Vincristine
E. Colcemid .......Answer.........A. Taxol
Which one of the following statements about microtubules is
correct?
,age 2 of 324
A. Tubulin dimers with nucleoside diphosphates in their nucleotide
binding site(s) have a lower affinity for each other than tubulin
dimers with nucleoside triphosphates in their nucleotide binding
site(s).
B. In vivo, polymerization of microtubules typically occurs at the
minus end because the plus end is anchored.
C. Myosin is a motor protein that moves toward the plus end of
microtubules.
D. Only the alpha subunit of a tubulin dimer has a nucleotide
binding site.
E. ATP is the nucleotide that occupies the nucleotide binding
site(s) of tubulin dimers. .......Answer.........A. Tubulin dimers with
nucleoside diphosphates in their nucleotide binding site(s) have a
,age 3 of 324
lower affinity for each other than tubulin dimers with nucleoside
triphosphates in their nucleotide binding site(s).
Which of the following is a property of microtubules, but not of
actin?
A. In vitro, both ends can show dynamic growth
B. Can be used for vesicle transport
C. Subunits are dimeric
D. Can form stable arrangements to support cell projections
E. Polarity at filament ends .......Answer.........C. Subunits are
dimeric.
Microtubule subunits (tubulin) are dimeric, while actin filament
subunits (G-actin) are monomeric.
, age 4 of 324
Identify if the following statements regarding microtubule
function in a cell are true or false.
Choices: True, False.
1. Microtubules are completely unchanging, stable structures.
2. Cilia are extensions of cytoplasm stabilized by microtubules.
3. During interphase, microtubules typically do not reach the cell
membrane.
4. Microvilli are the same as flagella. .......Answer.........1. False
2. True
3. True
4. False
Decide if the following statements are true or false.
