Q. During mitosis, ER and nucleolus begin to disappear at

A) Late prophase
B) Early metaphase
C) Late metaphase
D) Early prophase
Explanation

In mitosis, prophase is the longest phase of karyokinesis. In early prophase, nuclear membrane and nucleolus start disintegrating. Cell cytoskeleton, Golgi complex, ER, etc, also disappear.

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.