What occurs during the G₁ phase of the cell cycle?

During the G₁ phase of the cell cycle, the primary activity involves the cell carrying out its normal metabolic functions while also undergoing growth. This phase occurs after cell division (mitosis) and is characterized by the cell increasing in size, synthesizing proteins, and producing the necessary components required for DNA replication and subsequent cell division.

During G₁, the cell is actively engaged in processes like nutrient uptake and energy production, as it prepares itself for the S phase, where DNA synthesis occurs. The accumulation of energy and resources is crucial for the cell to transition successfully into the next phase.

Therefore, the characterization of the G₁ phase as a period of normal metabolic activity and growth accurately reflects the key processes taking place at this stage of the cell cycle.