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.
1 , which is quite different from the peptidoglycan of prokaryotic cell walls. 2  The primary function of the cell wall is support, and inconjunction with the central vacuole, to create turgor (stiffness) in plant structures like leaves. 3  Plant cells contain a specialized vacuole called the. . , which is characteristic of prokaryotic cells, mitochondria and chloroplasts. 2  This DNA is structurally identical to the DNA found in a eukaryotic cell's nucleus, except that instead of being like a long string, with two ends, it's formed into a closed circle.