Multiple Choice
Which of the following is not a component of the cytoskeleton?
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15. Cytoskeleton and Cell Movement
Overview of the Cytoskeleton
Multiple Choice
In an overview of the cytoskeleton, which structure is best described as the cell’s internal structural framework that helps maintain shape and organize intracellular components?
A
Endoplasmic reticulum
B
Plasma membrane
C
Cytoskeleton
D
Nucleolus
Verified step by step guidance1
Step 1: Understand the role of the cytoskeleton in the cell. The cytoskeleton is a network of protein fibers that provides structural support to the cell, helping it maintain its shape.
Step 2: Recognize that the cytoskeleton also organizes intracellular components by anchoring organelles and facilitating their movement within the cell.
Step 3: Compare the cytoskeleton to other cellular structures listed: the endoplasmic reticulum is involved in protein and lipid synthesis, the plasma membrane controls entry and exit of substances, and the nucleolus is involved in ribosome production.
Step 4: Conclude that among the options, the cytoskeleton best fits the description of the cell’s internal structural framework responsible for maintaining shape and organizing components.
Step 5: Remember that the cytoskeleton is composed of microfilaments, intermediate filaments, and microtubules, each contributing to the cell’s mechanical strength and organization.
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