Acer executives promote the company's new BYOC strategy. Acer CEO Jason Chen is on far left. Acer Chairman Stan Shih is second to the left. Although the new cloud apps are free, the company wants to include extra features users can choose to pay for.
All proteins are made up of combinations of 20 different amino acids. The RNA code (like DNA) is written in just four different chemical 'letters' - bases. How can a code with four letters identify 20 different amino acids? By reading it three letters at a time - CAU, CAG, GGA, etc.
Best Answer: Proteins, as noted before, are made up of amino acids. There are 20 different amino acids that are found in proteins. Amino acids have side groups that have different chemical characteristics. Some side groups are nonpolar while others are polar. A nonpolar side group makes an amino hydrophobic (water-hating), while a polar side group makes it hydrophilic (water-loving).