Massachusetts Comprehensive Assessment System (MCAS) Biology Practice Test

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Prepare for the Massachusetts Comprehensive Assessment System (MCAS) Biology Test. Ace your exam with flashcards and multiple-choice questions, all with helpful hints and explanations. Start studying today!

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Which process contributes to the structural integrity provided by microtubules?

Energy production
Cell division
Cellular respiration
Hormone secretion

The correct answer is: Cell division

Microtubules play a critical role in maintaining the structural integrity of cells and are instrumental during the process of cell division. During mitosis, microtubules form the mitotic spindle, which helps to separate chromosomes and ensure that each daughter cell receives the appropriate number of chromosomes. This organization and function of microtubules are essential for the mechanical support of the cell during division, helping to organize and secure all of the cellular components. While energy production and cellular respiration are vital cellular processes, they do not directly contribute to the structural integrity provided by microtubules. Hormone secretion, on the other hand, involves different cellular pathways and does not relate to microtubule function in terms of maintaining or enhancing structural integrity. The involvement of microtubules in cell division highlights their crucial role in ensuring that cells remain structurally sound and can effectively reproduce, thereby supporting overall cell health and function.