Raul Reyes: Amid the hoopla over the fight of the century there is a shameful silence on Mayweather's long history of domestic violence. He says instead, the big payday for the fighter -- and promoters and sponsors -- appears to reward behavior that is epidemic in America.
All living substances use DNA. The only reason the term genetic material is usd, is because we use mRNA to carry the DNA message, and viruses also use mRNA as their genetic material.
Materials for Life. Carbon, hydrogen, oxygen, nitrogen, phosphorus, and calcium form the major chemical scaffolding of biological molecules. Hydrogen, nitrogen, oxygen, phosphorus, and sulfur combined with carbon generated the first group of compounds that eventually formed the chemical basis of life.arbon The carbon compounds that make up essential molecules such as proteins are described in the notes on biological molecules. Carbon is second only to hydrogen in the number of compounds it can form, oxygen being the third in this capability. Carbon can form more than 2500 compounds with hydrogen alone.