The mass of cells that attaches itself to the wall of the uterus about two weeks after conception is called a(n) ________ and has about ________ cells.

Question

Quizplus · Accepted Answer

The mass of cells that attaches itself to the wall of the uterus about two weeks after conception is called a blastocyst and has approximately 150 cells. The other options listed are incorrect. The umbilical cord is a structure that connects the developing fetus to the placenta. The placenta is a structure that forms from the blastocyst and provides nutrients and oxygen to the developing fetus. An autosome is a chromosome that is not a sex chromosome. The chorion is a membrane that develops around the fertilized egg and plays a role in the formation of the placenta.

The Mass of Cells That Attaches Itself to the Wall