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:
Bags that exceed 62 inches will be assessed a fee of $150 per piece. Those larger than 115 inches cannot be checked. Size is calculated by adding the length, width, and height. They also charge for overweight bags. Luggage weighing between 50 and 70 pounds are hit with a fee of $50. Bags between 70 and 100 pounds are charged a fee of $100. Anything heavier is not permitted to be checked. If you need to carry more than 100 pounds, call American in advance to discuss your options. American does charge for luggage, and at this time their fees are higher than any others in the airline industry.