Very, very rare. Uranium used in power plants is typically only 3% U-235 (the explosive stuff), while bomb-grade uranium is nearly pure U-235. Simply, the concentration of U-235 in reactor-grade uranium is too small to start a chain reaction and detonate like a bomb.
Answer:
Glycocalyx
Explanation:
Glycocalyx is carbohydrate rich (glycoprotein + glycolipid) coating that is found in outer surface of cell membrane of many prokaryotic and eukaryotic cells specially bacteria.
Glycoprotein=Carbohydrate + Protein
Glycolipids= Carbohydrate + Lipids
Glycocalyx provied a barrier between cell and its surrounding, adhesion and provide protection in bacteria. In eukaryotes it can be used to identify cells.
A. Trees regain their leaves