객관식
In eukaryotic cells, cell shape is primarily reinforced by which structure?
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15. Cytoskeleton and Cell Movement
Overview of the Cytoskeleton
객관식
Which of the following is not a component of the cytoskeleton?
A
Intermediate filaments
B
Actin filaments
C
Nucleation
D
Microtubules
검증된 단계별 안내1
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: microtubules, actin filaments (also known as microfilaments), and intermediate filaments.
Identify the role of each component: Microtubules are involved in maintaining cell shape, enabling cell motility, and facilitating intracellular transport. Actin filaments are crucial for cell movement and muscle contraction. Intermediate filaments provide mechanical support for the cell.
Define 'nucleation': In cell biology, nucleation is the initial process that occurs in the formation of a new structure, such as the assembly of microtubules or actin filaments. It is not a structural component but rather a process.
Compare the options: Review the list of options provided: Intermediate filaments, Actin filaments, Microtubules, and Nucleation. Determine which one does not fit the definition of a cytoskeletal component.
Conclude which is not a component: Based on the understanding that nucleation is a process and not a structural component, identify 'Nucleation' as the option that is not a component of the cytoskeleton.
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