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Multiple Choice
Which structures form the spindle apparatus during mitosis?
A
Microtubules
B
Collagen fibers
C
Actin filaments
D
Intermediate filaments
Verified step by step guidance
1
Begin by understanding the role of the spindle apparatus in mitosis. The spindle apparatus is crucial for separating chromosomes during cell division.
Identify the components that make up the spindle apparatus. The primary structure involved is the microtubules, which are dynamic filaments that grow and shrink to move chromosomes.
Differentiate between the options given: Microtubules, Collagen fibers, Actin filaments, and Intermediate filaments. Microtubules are the correct answer as they form the spindle fibers.
Collagen fibers are part of the extracellular matrix and provide structural support to tissues, not involved in forming the spindle apparatus.
Actin filaments and Intermediate filaments are part of the cytoskeleton but do not form the spindle apparatus. Actin is involved in cell movement and shape, while Intermediate filaments provide mechanical support.