Question

which process must take place before mitosis can occur properly?

active transport
aerobic respiration
dna replication
protein synthesis

Explanation:

Before mitosis, DNA replication occurs in the S - phase of the cell cycle. This ensures that each daughter cell will receive an identical set of genetic material. Active transport is a process for moving substances across membranes. Aerobic respiration is for energy production. Protein synthesis is important but not the key pre - mitosis process. DNA replication is essential for proper mitosis as it duplicates the genetic information.

Answer:

DNA replication