Page 1 of 182
CELL BIOLOGY 2025/2026 EXAM 4 BANK
CURRENTLY TESTING QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED) FOR GUARANTEED
PASS/TOP-RATED A+.
CELL BIOLOGY
Ace your Cell Biology exam with this comprehensive guide,
designed to master essential concepts including cellular
structure, metabolic pathways, and membrane transport
mechanisms. This resource provides high-yield practice
questions and detailed explanations that reinforce key
principles for both lecture and lab assessments.
Which is the toughest and most durable of the different
types of cytoskeletal filaments?
A. dynein
B. actin filaments
C. myosin
D. microtubules
E. intermediate filaments ...... ANSWER ....... E
Intermediate filaments are found in what structure?
A. nuclear lamina
B. mitotic spindle
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C. cell cortex
D. centrosomes
E. cilia ...... ANSWER ....... A
Which term best describes the structure of intermediate
filament monomers?
a.tubelike
b.meshlike
c. ropelike
d. springlike ...... ANSWER ....... c
Which of the following types of intermediate filaments are
found in all animal cells?
A. nuclear lamins
B. vimentin and vimentin-related filaments
C. keratin filaments
D. neurofilaments ...... ANSWER ....... A
GTP hydrolysis and whether GTP or GDP is bound to tubulin
is an important mechanism to control the dynamic
instability of microtubules. Certain aspects of dynamic
instability can be viewed using GFP-EB1. Which process(es)
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is it useful for visualizing and why? A. growing microtubules,
because EB1 binds to the GTP-tubulin cap on microtubules
B. growing and shrinking microtubules, because EB1 binds
to the GTP-tubulin cap on microtubules
C. growing and shrinking microtubules, because EB1 binds
to the GDP-tubulin cap on microtubules
D. shrinking microtubules, because EB1 binds to the GTP-
tubulin cap on microtubules ...... ANSWER ....... A
How would the animation of microtubule dynamics change
after adding a non-hydrolyzable analog of GTP to the cells
expressing GFP tubulin?
A. Microtubules would shrink.
B. Microtubules would grow longer.
C. Dynamic instability would increase as microtubules
rapidly switch between growing and shrinking.
D. Microtubule dynamics would not change. ...... ANSWER
....... B
The cargo headed to the axon terminal (outward transport) is
transported by ____ and the cargo headed to the cell body
(backward transported) is transported by ___ ...... ANSWER
....... kinesin; dynein
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What does the cellular motility of sperm depend on?
A. actin and kinesin
B.microtubules and kinesin
C. actin and myosin
D.microtubules and dynein ...... ANSWER ....... D
What do microtubules resemble?A.hollow tubes
B.interlocking chains
C. meshlike networks
D. ropelike strands ...... ANSWER ....... A
Dynamic instability in microtubules stems from the intrinsic
capacity of tubulin molecules to hydrolyze what?
A.peptide bonds
B. ATP
C. tubulin dimers
D. water
E. GTP ...... ANSWER ....... E
CELL BIOLOGY 2025/2026 EXAM 4 BANK
CURRENTLY TESTING QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED) FOR GUARANTEED
PASS/TOP-RATED A+.
CELL BIOLOGY
Ace your Cell Biology exam with this comprehensive guide,
designed to master essential concepts including cellular
structure, metabolic pathways, and membrane transport
mechanisms. This resource provides high-yield practice
questions and detailed explanations that reinforce key
principles for both lecture and lab assessments.
Which is the toughest and most durable of the different
types of cytoskeletal filaments?
A. dynein
B. actin filaments
C. myosin
D. microtubules
E. intermediate filaments ...... ANSWER ....... E
Intermediate filaments are found in what structure?
A. nuclear lamina
B. mitotic spindle
, Page 2 of 182
C. cell cortex
D. centrosomes
E. cilia ...... ANSWER ....... A
Which term best describes the structure of intermediate
filament monomers?
a.tubelike
b.meshlike
c. ropelike
d. springlike ...... ANSWER ....... c
Which of the following types of intermediate filaments are
found in all animal cells?
A. nuclear lamins
B. vimentin and vimentin-related filaments
C. keratin filaments
D. neurofilaments ...... ANSWER ....... A
GTP hydrolysis and whether GTP or GDP is bound to tubulin
is an important mechanism to control the dynamic
instability of microtubules. Certain aspects of dynamic
instability can be viewed using GFP-EB1. Which process(es)
, Page 3 of 182
is it useful for visualizing and why? A. growing microtubules,
because EB1 binds to the GTP-tubulin cap on microtubules
B. growing and shrinking microtubules, because EB1 binds
to the GTP-tubulin cap on microtubules
C. growing and shrinking microtubules, because EB1 binds
to the GDP-tubulin cap on microtubules
D. shrinking microtubules, because EB1 binds to the GTP-
tubulin cap on microtubules ...... ANSWER ....... A
How would the animation of microtubule dynamics change
after adding a non-hydrolyzable analog of GTP to the cells
expressing GFP tubulin?
A. Microtubules would shrink.
B. Microtubules would grow longer.
C. Dynamic instability would increase as microtubules
rapidly switch between growing and shrinking.
D. Microtubule dynamics would not change. ...... ANSWER
....... B
The cargo headed to the axon terminal (outward transport) is
transported by ____ and the cargo headed to the cell body
(backward transported) is transported by ___ ...... ANSWER
....... kinesin; dynein
, Page 4 of 182
What does the cellular motility of sperm depend on?
A. actin and kinesin
B.microtubules and kinesin
C. actin and myosin
D.microtubules and dynein ...... ANSWER ....... D
What do microtubules resemble?A.hollow tubes
B.interlocking chains
C. meshlike networks
D. ropelike strands ...... ANSWER ....... A
Dynamic instability in microtubules stems from the intrinsic
capacity of tubulin molecules to hydrolyze what?
A.peptide bonds
B. ATP
C. tubulin dimers
D. water
E. GTP ...... ANSWER ....... E
