Biology Multiple Choice Questions and Answers for Different Competitive Exams

Multiple Choice Questions on Cytoskeleton

1. Which of the following cells lacks cytoskeleton?
a) Eukaryotic plant cell
b) prokaryotic bacterial cells
c) both a and b
d) Prokaryotic cells and eukaryotic animal cells

2. Cytoskeletons are chemically
a) nucleoprotein filaments
b) nucleoprotein filaments and lipids
c) ribonucleoproteins filaments
d) protein filaments


3. The existence of cytoskeleton was first postulated by
a) Strasburger
b) Koltzoff
c) Meischer
d) Crick

4. The cytoskeleton consists of


Cytoskeleton
a) microtubules
b) microfilamemts
c) intermediate filaments
d) all of these

5. Microtubules are made up of
a) flagellin
b) desmin
c) tubulin
d) actin and myosin

6. Which of the following is a microtubule associated protein (MAPS)
a) ‘tus’ protein
b) ‘tau’ protein
c) ‘rho’ protein
d) G protein

7. The microtubule assembly is inhibited by
a) Colchicine
b) Vincristine
c) Vinblastine
d) All of these

8. Microfilaments are made up of
a) actin
b) tubulin and actin
c) desmin
d) vimetin

9. Microfilaments are involved in
a) cyclosis
b) amoeboid movement
c) furrow formation during cell division
d) all of these

10. The intermediate filament present in nail and hair is a type I IF protein made of
a) lamins
b) vimetins
c) keratins
d) tubulins

11. Which of the following is a microfilament inhibitor
a) aspirin
b) Cinchonine
c) colchicine
d) cytochalasin-B

12. Chromosome movement during cell division is regulated by
a) microtubules
b) microfilaments
c) intermediate filaments
d) all of these


13. Which of the following statements are true
a) Intermediate filaments are resistant to colchicine and cytochalasin-B
b) microtubules are made up of tubulins
c) microfilaments are made up of actin
d) All of these

14. Cilia and flagella of Eukaryotic cells are made up of
a) keratin
b) tubulin
c) lamin
d) desmin

15. Which of the following is the most heterogeneous type of cytoskeletal filament
a) microtubules
b) microfilaments
c) intermediate filaments
d) none of these

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Answers
1. b) prokaryotic bacterial cells
2. d) protein filaments
3. b) Koltzoff
4. d) all of these
5. c) tubulin
6. b) ‘tau’ protein
7. d) All of these
8. a) actin
9. d) all of these
10. c) keratins
11. d) cytochalasin-B
12. a) microtubules
13. d) All of these
14. b) tubulin
15. c) intermediate filaments
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