Cytoskeletal structures are visible under the electron microscope. These structures are of three types, the first one is Microtubles, second Microfilaments and the last one is Intermediated filaments. Microtubules are hollow cylinders with their walls consists of the contractile protein tubulin. these subunits are arranged alternative in helix and their lateral projections from cross bridges. Calcium, magnesium, GTP, and calmodulin are required to assemble the microtubule subunits. Microfilaments are the soli rods made up of Globular protein and filamentous protein. Intermediate filaments are solid, noncontractile filaments made up of eight protofilaments. They are larger than microfilaments and are present in all the eukaryotic cells except RBC's. So, take this quiz and increase your knowledge about cytoskeletal structures.
1. Which cell organelle is responsible for movement of the cell?
A. Mitochondria
B. Golgi bodies
C. Ribosome
D. Cytoskeleton
2. Microtubules are present in .....
A. Slime Moulds
B. Birds
C. Amoeba
D. Prokaryotes
3. The number of microtubules is increasing during ....
A. Protein formation
B. Vitamin formation
C. Cell division
D. None of them
4. Which one forms the motile element of cilia and flagella?
A. Microtubules
B. Microfilaments
C. Both of them
D. None of them
5. Microfilaments are made of two intertwined strands of a globular protein called .......
A. Myosin
B. Actin
C. Pepsin
D. Lactin
6. Microtubules are the component of ________ and ________.
A. Centrosome and ribosome
B. Lysosome and peroxisome
C. Golgi bodies and mitochondria
D. Centriole and basal bodies
7. Which one play an important role in determining the polarity of the cell?
A. Microfilaments
B. Intermediated filaments
C. Microtubules
D. None of the above
8. Microfilaments are also known as ......
A. Protein filaments
B. Actin filaments
C. Myosin filaments
D. All of them
9. Which one brings the movement of the plasma membrane during exocytosis and endocytosis?
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. All of the above
10. Which one maintain the shape of the cell?
A. Microtubules
B. Microfilaments
C. Intermediate filaments
D. None of the above
11. _______ of desmosome are made up of intermediate filaments.
A. Keratin
B. Protein
C. Vitamin
D. Tonofibrils
12. Which of the following causes cleavage of animal cells during cell division?
A. Microfilaments
B. Intermediate filaments
C. Microtubules
D. Mitochondria
13. Which of the following form spindle in some primitive organisms?
A. Micotubules
B. Golgi bodies
C. Ribosome
D. Microfilaments
14. Intermediate filaments are made up of different protein like ......
A. CFTR and C-myc
B. Glucose transporter and Glycophorin D
C. Histones and Hydrolases
D. Keratin and desmin
15. Keratin forms the structural protein of .......
A. Hair
B. Nails
C. Skin
D. All of them
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