According to NCERT Class 11 Biology chapter 10 notes and NCERT notes for Class 11 Biology chapter 10,

• The cell cycle is a series of events that occur during the life of a cell. In all living organisms, cell division is a crucial activity.
• During cell division, DNA replication and cell growth happen at the same time. To ensure proper division and formation of progeny cells with intact genomes, all of these processes, namely cell division, DNA replication, and cell growth, must be coordinated.
• The cell cycle is the process through which a cell replicates its genome, synthesizes other cell parts, and eventually splits into two daughter cells.