Multiple Choice
Which of the following is NOT a phase of mitosis?
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16. Cell Division
Mitosis
Multiple Choice
In mitosis, what part of the cell is actually dividing (separating) to form two identical nuclei?
A
The plasma membrane (it splits first to create two daughter cells)
B
The nucleus (its duplicated chromosomes are segregated into two nuclei)
C
The cytoplasm (cytokinesis)
D
The mitochondria (they divide to distribute ATP-producing organelles)
Verified step by step guidance1
Understand that mitosis is the process of nuclear division in a eukaryotic cell, where the duplicated chromosomes are separated into two identical sets.
Identify the key cellular structure involved in mitosis: the nucleus, which contains the chromosomes that must be equally divided.
Recognize that during mitosis, the nuclear envelope breaks down, allowing the spindle fibers to attach to chromosomes and pull sister chromatids apart.
Note that the plasma membrane and cytoplasm division occur after mitosis, during cytokinesis, which physically separates the two daughter cells.
Conclude that the part of the cell actually dividing during mitosis to form two identical nuclei is the nucleus itself, as it segregates the duplicated chromosomes into two new nuclei.
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