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The solid linear cytoskeletal elements h...

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as

A

Lamina

B

Microtubules

C

Microfilaments

D

Intermediate filaments

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To answer the question regarding the solid linear cytoskeletal elements with a diameter of 6 nm, we can follow these steps: ### Step 1: Understand the Options The question provides four options: lamina, microtubules, microfilaments, and intermediate filaments. We need to analyze each option to identify which one fits the description of having a diameter of 6 nm and being made up of a single type of monomer. ### Step 2: Analyze Each Option - **Lamina**: This term refers to a general anatomical layer or plate and does not specifically describe a type of cytoskeletal element. Therefore, it is not the correct answer. - **Microtubules**: These are hollow tubes made from proteins called alpha and beta tubulin. They have a larger diameter (approximately 25 nm) and are not solid linear structures. Thus, they do not fit the description. - **Microfilaments**: Also known as actin filaments, these are solid linear structures with a diameter ranging from 6 to 8 nm. They are made of the protein actin, which is a single type of monomer. This option matches the description given in the question. - **Intermediate Filaments**: These filaments form a network in the cytoplasm and have a diameter of about 10 nm. They are not solid linear elements with a diameter of 6 nm, so they are also not the correct answer. ### Step 3: Conclusion Based on the analysis, the solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as **microfilaments**. ### Final Answer **Microfilaments** ---
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