1. Cell differentiation
2. Cell differentiation
3. Zygote
4. Programmed cell death
5. The cells in between were programmed to die
I hope that this helps you !
Answer:
The answer of your question is D I think
The answer is the option b, Both move molecules from higher
concentration to lower concentration.The process of diffusion is the
movement of molecules due to the difference on concentrations, which
only can occurs in one direction: from high concentration to lower
concentration. Facilitate diffusion is a specific diffusion that
happens in the cells and requires the pass through membrane cell via
transmembrane specific proteins, but that does not change the fact that
it has to be from higher concentrations to lower concentrations regions.
