What's the difference between purine and pyrimidines? - Purines contain two carbon-nitrogen rings and four nitrogen atoms - Pyrimidines contain one carbon-nitrogen ring and two nitrogen atoms Why do purines bond with pyrimidines in the DNA ladder? They are opposite poles and have the same number of hydrogren bonds
Depending on the weight of the bag, the costs of an overweight bag is going to range anywhere from as little as $50 to as much as $200 or more. For example, with United Airlines, overweight bags are going to cost $100 to $200 depending on how many pounds over the limit they are. The following is a chart showing the overweight luggage fee for popular airlines as of 2013:
When flying with United Airlines, you'll be allowed 1 carry-on bag, with maximum dimensions limited to 14 inches x 9 inches x 22 inches (23 x 35 x 56 cm). You can check the size at the airport by using one of metal bins at the check-in desk to measure your bags.