Which is NOT a function of the cell cycle checkpoints?

Which is NOT a function of the cell cycle checkpoints?

• A. To prevent damaged DNA from replication
• B. To regulate cell size
• C. To assist in DNA repair
• D. To facilitate the transition to the next cell cycle phase

Answer: (B)

Cell cycle checkpoints play crucial roles in maintaining the integrity and proper functioning of the cell cycle. One of their primary functions is to monitor the cell's readiness to progress to the next phase, ensuring that conditions are appropriate for division. The functions of the checkpoints include preventing damaged DNA from replication, assisting in DNA repair, and facilitating the transition to the next cell cycle phase only when the cell is adequately prepared. While the regulation of cell size is important for overall cell function and growth, it is not a direct function of the cell cycle checkpoints. Instead, cell size regulation occurs through different cellular mechanisms and is not primarily managed at the checkpoints. Thus, focusing on the checkpoint functions helps clarify that their primary responsibilities align more with DNA integrity and readiness for division rather than directly regulating cell size.

Cell cycle checkpoints play crucial roles in maintaining the integrity and proper functioning of the cell cycle. One of their primary functions is to monitor the cell's readiness to progress to the next phase, ensuring that conditions are appropriate for division.

The functions of the checkpoints include preventing damaged DNA from replication, assisting in DNA repair, and facilitating the transition to the next cell cycle phase only when the cell is adequately prepared.

While the regulation of cell size is important for overall cell function and growth, it is not a direct function of the cell cycle checkpoints. Instead, cell size regulation occurs through different cellular mechanisms and is not primarily managed at the checkpoints. Thus, focusing on the checkpoint functions helps clarify that their primary responsibilities align more with DNA integrity and readiness for division rather than directly regulating cell size.