One of the differences between embryonic stem cells and adult stem cells is . a. extracting adult stem cells destroys the embryo
b. embryonic stem cells are multipotent
c. extracting embryonic stem cells destroys the embryo
d. the immune system does not have the potential to reject embryonic stem cells

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