What causes a cell to grow and divide at a harmful rate? What role does the placement of the S phase and the M phase in the cell cycle have on the likelihood that a mutation, such... What causes a cell to grow and divide at a harmful rate? What role does the placement of the S phase and the M phase in the cell cycle have on the likelihood that a mutation, such as rapid and harmful growth, will occur? Read more

Understand the Problem

The question presents a two-part examination based on a passage about the cell cycle. Part A asks what leads cells to grow and divide at harmful rates, referencing growth factors and controlling factors. Part B inquires about the significance of the separation of the S and M phases in relation to mutation likelihood. The user is expected to analyze the information provided in the passage for appropriate answers.

More Information

During the S phase, DNA is replicated; any mutations here can propagate through subsequent cell generations. The M phase ensures appropriate DNA segregation. Disruption in cycle checkpoints like G1 or G2 allows errors to persist, potentially leading to cancer.

Tips

A common mistake is assuming that cell growth itself is damaging. It's the unchecked and rapid division due to cycle disruptions, rather than normal growth, that poses risks.

Sources

• Intracellular Control of Cell-Cycle Events - NCBI - ncbi.nlm.nih.gov
• Phases of the cell cycle (article) | Khan Academy - khanacademy.org
• Cell cycle checkpoints (article) | Khan Academy - khanacademy.org