The plasma membrane primarily consists of: lipids, proteins and carbohydrates.
Venous anastomosis (or some people call it circulatory anastimosis) ia a connection between two blood vessles, such as between arteries and veins.
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(Its not a big answer but i really hope this is the answer you are looking for)
Because you have to have fossil to make the evolution and it will make it better
Peptidoglycan is present in the cell wall of gram-positive bacteria. Bacteria are safeguarded by a robust cell wall comprising peptidoglycan. The layer of peptidoglycan in the cell wall of bacteria refers to a crystal lattice composition produced from linear chains of two alternating amino sugars, that is NAM (N-acetylmuramic acid) and NAG (N-acetylglucosamine). Peptidoglycans is one of the most essential sources of D-amino acids in nature.
