Answer:
sorry. I can't not answer this question now cause i already submitted it. i did not mean to.
Answer:
it allows only some materials to pass through and leave the cell.
Answer:
Many people believe it to be unethical to remove/implant an embryo into a female, just as they see it unfitting to manipulate an individual when in an embryonic state.
Explanation:
The biggest difference between prokaryotic and eukaryotic is that eukaryotic cells have a nucleus and prokaryotic cells do not.