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?
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15. Cytoskeleton and Cell Movement
Overview of the Cytoskeleton
Multiple Choice
In an overview of the cytoskeleton, which structure primarily helps a eukaryotic cell maintain its shape and provides mechanical support?
A
Ribosomes, which provide structural rigidity by forming a supportive scaffold in the cytosol
B
The cytoskeleton (a network of microfilaments, intermediate filaments, and microtubules)
C
The nucleolus, which organizes ribosome assembly inside the nucleus
D
Lysosomes, which maintain cell shape by regulating intracellular pH and digestion
Verified step by step guidance1
Step 1: Understand the role of the cytoskeleton in eukaryotic cells. The cytoskeleton is a dynamic network composed of microfilaments, intermediate filaments, and microtubules that provides structural support and helps maintain the cell's shape.
Step 2: Recognize that ribosomes are primarily involved in protein synthesis and do not contribute to mechanical support or shape maintenance of the cell.
Step 3: Note that the nucleolus is a region within the nucleus responsible for assembling ribosomal RNA and ribosome subunits, not for maintaining cell shape.
Step 4: Understand that lysosomes function mainly in digestion and recycling of cellular waste, and do not provide mechanical support or shape maintenance.
Step 5: Conclude that among the options, the cytoskeleton is the structure that primarily helps a eukaryotic cell maintain its shape and provides mechanical support.
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