Q: In a cell cycle, what kind of regulator molecules allow advancement to the next stage?


Read this paragraph and choose the correct option from the provided answers:

10.3 Control of the Cell Cycle Each step of the cell cycle is monitored by internal controls called checkpoints. There are three major checkpoints in the cell cycle: one near the end of G1, a second at the G2/M transition, and the third during metaphase. Positive regulator molecules allow the cell cycle to advance to the next stage. Negative regulator molecules monitor cellular conditions and can halt the cycle until specific requirements are met.

 Choices:

- strong

- similar

- negative

- positive


A:
positive