Textbook Question
Mark the following statements about the cytoskeleton as true or false. If a statement is false, correct it to make a true statement.
Intermediate filaments are ropelike structures composed of tubulin proteins.
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2. Cell Chemistry & Cell Components
Introduction to the Cytoskeleton
Multiple Choice
Which of the following is a feature common to all three components of the cytoskeleton?
A
They are all permanent structures within the cell.
B
They provide structural support to the cell.
C
They are involved in DNA replication.
D
They are composed of the same protein subunits.
Verified step by step guidance1
Identify the three main components of the cytoskeleton: microfilaments, intermediate filaments, and microtubules.
Understand the primary function of the cytoskeleton, which is to provide structural support to the cell, maintaining its shape and offering mechanical resistance to deformation.
Recognize that while each component of the cytoskeleton has unique functions and structures, they all contribute to the overall structural integrity of the cell.
Consider the statement that all components are permanent structures. Note that this is not entirely accurate as some components, like microfilaments and microtubules, are dynamic and can be rapidly assembled and disassembled.
Evaluate the statement that they are composed of the same protein subunits. Understand that this is incorrect as microfilaments are made of actin, microtubules are made of tubulin, and intermediate filaments are composed of various proteins depending on the cell type.
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