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Multiple Choice
During prophase of mitosis, what structure disintegrates?
A
Mitochondria
B
Ribosomes
C
Cell membrane
D
Nuclear envelope
Verified step by step guidance
1
Understand the context of mitosis: Mitosis is the process of cell division that results in two genetically identical daughter cells. It consists of several phases: prophase, metaphase, anaphase, and telophase.
Focus on prophase: During prophase, several key events occur, including the condensation of chromatin into visible chromosomes and the beginning of spindle formation.
Identify the structures involved: The nuclear envelope, mitochondria, ribosomes, and cell membrane are all cellular structures, but only the nuclear envelope is directly involved in the changes during prophase.
Recognize the role of the nuclear envelope: The nuclear envelope surrounds the nucleus and separates the genetic material from the cytoplasm. During prophase, it disintegrates to allow the chromosomes to interact with the spindle fibers.
Conclude the process: The disintegration of the nuclear envelope is a crucial step in prophase, facilitating the movement and alignment of chromosomes for subsequent phases of mitosis.