Multiple Choice
In eukaryotic organisms, what type of daughter cells does mitosis produce from a single parent cell?
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16. Cell Division
Mitosis
Multiple Choice
In animal cell mitosis, which structure anchors the mitotic spindle at the cell cortex to help position it?
A
The contractile ring of actin and myosin anchoring spindle poles during metaphase
B
Astral microtubules interacting with cortical dynein
C
Desmosomes anchoring kinetochore microtubules to the plasma membrane
D
The nucleolus anchoring spindle microtubules through rRNA
Verified step by step guidance1
Understand the role of the mitotic spindle in animal cell mitosis: it is responsible for segregating chromosomes into daughter cells.
Identify the components of the mitotic spindle: kinetochore microtubules, interpolar microtubules, and astral microtubules.
Recognize that astral microtubules extend from the spindle poles toward the cell cortex and interact with motor proteins like dynein anchored at the cortex.
Know that cortical dynein pulls on astral microtubules to position and orient the spindle within the cell, ensuring proper division plane alignment.
Conclude that the structure anchoring the mitotic spindle at the cell cortex to help position it is the astral microtubules interacting with cortical dynein.
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