What is the function of the cell membrane in an animal cell?

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?