What is the difference between prokaryotic and eukaryotic cells? A. Eukaryotic cells do not have membrane-bound organelles, but prokaryotic cells do.
B. Organisms with eukaryotic cells are always multicellular, but organisms with prokaryotic cells are not.
C. Prokaryotic cells do not have a nucleus, but eukaryotic cells do.
D. Prokaryotic cells always have cell walls, but eukaryotic cells do not.

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed