Final answer:
Most of a cell's growth takes place during the G1 phase, not the G2 phase.
Step-by-step explanation:
The statement is False. Most of a cell's growth actually takes place during the G1 phase of the cell cycle. In this phase, the cell undergoes rapid growth and performs its routine functions, including synthesizing amino acids and proteins needed for DNA replication. The S phase follows, during which the cell's DNA is replicated. The G2 phase is a shortened growth period where organelles are duplicated and preparations for cell division, such as the production of microtubules for the mitotic spindle, are made.