Which organelle is found in both plant and animal cells and allows only certain things to pass in and out of the cell?

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b.organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin