External factors greatly affect how cells control their growth through checkpoints. Let’s break down some important influences:
Nutrients: When cells have enough nutrients, they receive a signal to keep growing. But if nutrients are low, the cell stops its growth cycle.
Growth Factors: These are special proteins that help cells know it’s time to divide. If these proteins are missing, the cells can’t move forward with division.
DNA Damage: There are checkpoints that check if the DNA is okay. If they find any damage, the cell will pause to fix it before continuing.
Cell Density: When there are too many cells in one space, they can stop each other from growing. This is called contact inhibition.
In short, cells need to balance their internal signals with outside influences!
External factors greatly affect how cells control their growth through checkpoints. Let’s break down some important influences:
Nutrients: When cells have enough nutrients, they receive a signal to keep growing. But if nutrients are low, the cell stops its growth cycle.
Growth Factors: These are special proteins that help cells know it’s time to divide. If these proteins are missing, the cells can’t move forward with division.
DNA Damage: There are checkpoints that check if the DNA is okay. If they find any damage, the cell will pause to fix it before continuing.
Cell Density: When there are too many cells in one space, they can stop each other from growing. This is called contact inhibition.
In short, cells need to balance their internal signals with outside influences!