Question

Select the INCORRECT statement.

• A. During cell division, the spindle fibres originate from microtubules.
• B. Microfilaments are composed of protein keratin.
• C. Intermediate filaments provide tensile strength to the cell.
• D. The components of cytoskeleton are microfilaments, microtubules and intermediate filaments.

Hint:

Remember: Actin = microfilaments, Tubulin = microtubules, Keratin = intermediate filaments.

Answer 1

The Correct Option is B

Step 1: Understanding cytoskeleton components.
The cytoskeleton consists of microtubules, microfilaments, and intermediate filaments.
Step 2: Composition of each component.
Microtubules are made of tubulin.
Microfilaments are composed of actin protein.
Intermediate filaments are made of proteins like keratin.
Step 3: Identifying the incorrect statement.
The statement saying microfilaments are made of keratin is incorrect.
Step 4: Conclusion.
Hence, option (B) is the incorrect statement.