01
True or false
1 point
True or false: The cytoskeleton is a rigid framework whose filaments remain fixed as a cell changes shape.
Free Practice Quiz Question List
5 The Cytoskeleton Online Quiz Questions
Use this free practice quiz with 20 questions to review 5 The Cytoskeleton, test your knowledge, and prepare for your next test or exam.
20 questions
02
Choose one
1 point
A migrating cell extends a protrusion at its leading edge by pushing the membrane outward. Which cytoskeletal filament most directly produces this push?
- A
Intermediate filaments
- B
Actin filaments
- C
Microtubules
- D
Nuclear lamina
03
Choose all
1 point
Select all the statements that describe intermediate filaments.
- A
They are made only of actin subunits.
- B
Their protein building blocks can vary by cell type.
- C
They are generally more dynamic than actin filaments and microtubules.
- D
They help cells resist mechanical stress.
04
Choose one
1 point
A vesicle is carried toward the cell's periphery along a microtubule. Which motor protein would generally transport it in that direction?
- A
Kinesin
- B
Dynein
- C
Myosin
- D
Vimentin
05
True or false
1 point
True or false: The two ends of a microtubule differ, so microtubules are described as polar.
- A
True
- B
False
06
Fill in the blank
1 point
Each microtubule is a hollow tube built from dimers of .
07
Written response
1 point
Which motor protein generally moves toward the minus end of a microtubule, often carrying cargo toward the cell center?
08
Choose all
1 point
Select all the functions or structures associated with microtubules.
- A
They help position organelles.
- B
They are the main filaments that resist stretching in skin cells.
- C
They provide tracks for cargo moving through the cell.
- D
They form the structural core of cilia and eukaryotic flagella.
09
Fill in the blank
1 point
The specialized intermediate-filament network that supports the inner surface of the nuclear envelope is the .
10
Written response
1 point
Which filament type works with myosin in the ring that tightens during the final separation of a dividing animal cell?
11
True or false
1 point
True or false: Many motile cilia and flagella have microtubules arranged in a characteristic 9 + 2 pattern.
- A
True
- B
False
12
Open ended
1 point
Explain how the cytoskeleton coordinates the movement of a crawling cell. Include the roles of actin, actin–myosin contraction, microtubules, and intermediate filaments.
13
Choose one
1 point
Where are actin filaments especially abundant when they help support a cell's surface shape?
- A
In the center of the nuclear envelope
- B
Inside the hollow core of a microtubule
- C
Just beneath the plasma membrane
- D
Only in the cell's flagella
14
Choose one
1 point
A migrating cell needs to push its membrane outward at its leading edge to form a protrusion. Which cytoskeletal filament system directly supports this change?
- A
Intermediate filaments
- B
Actin filaments
- C
Microtubules
- D
Nuclear lamina
15
Choose one
1 point
A cell is assembling hollow cytoskeletal tubes. Which building blocks should be joined to form these structures?
- A
Actin subunits
- B
Keratins
- C
α- and β-tubulin dimers
- D
Vimentin subunits
16
Written response
1 point
What is the specialized intermediate-filament network that supports the inner surface of the nuclear envelope called?
17
Choose one
1 point
A protein carries cargo along a cytoskeletal filament. What general role of motor proteins enables this directed transport?
- A
They convert energy from ATP into directed movement along a filament.
- B
They permanently cross-link all three filament systems.
- C
They make intermediate filaments assemble more rapidly.
- D
They provide the tubulin subunits used to build microtubules.
18
Written response
1 point
Which two proteins work together in the ring that tightens during the final separation of a dividing animal cell?
19
Choose one
1 point
A vesicle is being transported outward toward the cell's periphery along a microtubule. Which motor protein generally carries out this movement?
- A
Myosins moving along actin toward the cell center
- B
Dyneins moving along microtubules toward the periphery
- C
Intermediate filaments carrying cargo toward the periphery
- D
Kinesins moving along microtubules toward the periphery
20
Choose one
1 point
A motile cilium bends as its internal microtubules slide relative to one another. Which process generates this movement?
- A
Kinesin-driven assembly of actin filaments
- B
Dynein-driven sliding of microtubules
- C
Myosin-driven shortening of intermediate filaments
- D
Vimentin-driven sliding of tubulin dimers