Question

q 2. during anaphase, a step in the cell cycle, --
q the membrane surrounding the nucleus dissolves.
q paired chromosomes separate at protein structures.
q the mitochondrion processes nutrients.
q the nucleus repairs damaged strands of dna.
clear all

Explanation:

In anaphase of the cell - cycle, the key event is the separation of sister chromatids (paired chromosomes) at the kinetochore (protein - based structures). The dissolution of the nuclear membrane occurs in prophase, mitochondria process nutrients throughout the cell's life and not specifically in anaphase, and DNA repair is not a characteristic event of anaphase.

Answer:

B. paired chromosomes separate at protein structures.