What is the difference between pluripotent cells and totipotent cells?

Both pluripotent and totipotent cells are part of the stem cells. The stem cells have an ability to transform themselves into many type of cells that makes up the body.

During the mitosis of the zygote, 2 identical cells are formed. Those cells will form other cells and finally develop an organism. Those are the totipotent cells. Now to become a foetus, the baby undergoes a stage in which he's called an embryo and other cells develop: the pluripotent cells, which are able to become any cell that forms the body and help the embryo become a foetus.

So the difference between totipotent and pluripotent cells is that totipotent cells can only develop the organism, forming the embryo and the protective placenta, while the pluripotent cells can become any cell present in the body and help the embryo to become a foetus.

Hope this helps! :)

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.