When physicians perform an organ transplant, they choose a donor whose tissues match those of the recipient as closely as possible. Which of the following cell components must be matched to ensure the recipients body doesn’t reject the new organ? a
plasma membrane proteins
b
phospholipids
c
cell-surface carbohydrate
d
cytoplasm

the answer is

c. parental

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.