Environmental factors are really important when it comes to how cells grow and divide. Let's break it down:
Nutrient Availability: Cells need enough nutrients to move to the next stage of their cycle. For example, if there isn’t enough glucose (a type of sugar), the cell might stop at a checkpoint called G1.
Growth Factors: These are special proteins that help cells divide. One example is something called platelet-derived growth factor (PDGF). This protein can start the division process in certain cells, like fibroblasts, when the body needs to repair itself.
Density Dependence: When there are a lot of cells crowded together, they stop dividing. This is called density-dependent inhibition. It’s a way to stop too many cells from growing and helps prevent the formation of tumors.
By learning about these factors, we can see how our body adjusts to changes in its surroundings.
Environmental factors are really important when it comes to how cells grow and divide. Let's break it down:
Nutrient Availability: Cells need enough nutrients to move to the next stage of their cycle. For example, if there isn’t enough glucose (a type of sugar), the cell might stop at a checkpoint called G1.
Growth Factors: These are special proteins that help cells divide. One example is something called platelet-derived growth factor (PDGF). This protein can start the division process in certain cells, like fibroblasts, when the body needs to repair itself.
Density Dependence: When there are a lot of cells crowded together, they stop dividing. This is called density-dependent inhibition. It’s a way to stop too many cells from growing and helps prevent the formation of tumors.
By learning about these factors, we can see how our body adjusts to changes in its surroundings.