Maternal and fetal tissues form two units that are closely bound together at the placental level. Quiz. The fetal part of the placenta is made up of the chorionic plate with its placental villi, the cytotrophoblast layer and the intervillous spaces.
1 , which performs the function of photosynthesis. 2  Chloroplasts are double-membrane-bound, like mitochondria. 3  Also like mitochondria, their inner membrane is very complicated. 4  In fact, it's formed into many thylakoid structures which perform the same function performed by the thylakoids in prokaryotic cells.
Eukaroyotic cells also have a variety of organelles that carry out different functions. Prokaryotic cells came before eukaryotic cells so they do not have the organelles that eukaryotic cells have. Eukaryotic cells have a membrane bound nucleus, while prokaryotic cells store the DNA in a region called the nucleoid. Prokaryotic cells also have the outermost layer, the capsid, while eukaryotoic cells do not have this layer.