Biology
Grade-6
Easy

Question

The diameter of the intermediate filament is about

  1. 20 nm
  2. 10 nm
  3. 25 nm
  4. 7 nm

hintHint:

The size of intermediate filaments ranges between the microfilaments and microtubules.

The correct answer is: 10 nm


    • The diameter of the intermediate filament is about 10nm
    • The cells consist of the cytoskeleton which further consists of three types of fibers, microtubule, microfilament, and intermediate filament. 
    • These intermediate filaments are found in abundance in the cytoskeleton or cell and provide support to microtubules and microfilaments. 
    • Since its size lies between the sizes of microtubules which is about  25nm and microfilament which is about 8 nm, it is known as intermediate filament and its size is about 10 nm. 

    It is known that the intermediate filaments are responsible for forming the keratin in epithelial cells and neurofilaments in the neurons.

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