The plasma membrane does all of these except .
a. contains the genetic material
b. acts as a boundary or border for the cytoplasm
c. regulates passage of material in and out of the cell
d. functions in the recognition of other cells

Galaxy whose shape seems different follow no set pattern are classified as

What effect does plate tectonics have an organic evolution

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism