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Multiple Choice
Which of the following is NOT one of the components of the cytoskeleton?
A
Intermediate filaments
B
Microtubules
C
Endoplasmic reticulum
D
Microfilaments
Verified step by step guidance
1
Understand the components of the cytoskeleton: The cytoskeleton is a network of fibers that provides structural support to the cell. It is composed of three main types of protein filaments: microfilaments, intermediate filaments, and microtubules.
Identify the role of each component: Microfilaments are thin strands made of actin, providing support and enabling cell movement. Intermediate filaments provide mechanical strength to cells. Microtubules are hollow tubes that help in cell division and intracellular transport.
Recognize the function of the endoplasmic reticulum: The endoplasmic reticulum (ER) is an organelle involved in protein and lipid synthesis, not a structural component of the cytoskeleton.
Differentiate between cytoskeletal components and organelles: The cytoskeleton is made up of protein filaments, while the endoplasmic reticulum is a membrane-bound organelle.
Conclude which option is not part of the cytoskeleton: Based on the understanding of the roles and structures, identify that the endoplasmic reticulum is not a component of the cytoskeleton.