Final answer:
Cell division during normal development is influenced by growth hormones, cell death, DNA damage, transmembrane receptors, and the cell's current stage in the cell cycle. Hormones like HGH can have varying effects on cell division, while factors such as DNA damage can initiate repair mechanisms or apoptosis to maintain cellular integrity.
Step-by-step explanation:
The factors that influence cell division during normal development include:
- Growth hormones such as human growth hormone (HGH) can promote or inhibit cell division depending on their levels.
- Cell death can trigger neighboring cells to divide to replace the lost cells.
- DNA damage can halt cell division if the cell's repair mechanisms are activated or lead to programmed cell death (apoptosis) to prevent the spread of the damage.
- Transmembrane receptors, such as those for growth factors, are critical for responding to signals that regulate cell division.
- The current stage of the cell cycle determines if a cell is ready to enter into the next phase of division.
Additionally, the regulation of the cell cycle can be influenced by negative regulatory molecules like p53, which can trigger apoptosis if key cell cycle events do not occur properly.