The Structure of DNA (The Double Helix) DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
(June 2012) (Learn how and when to remove this template message) Quarter marathon (QM) refers to either an exact race of a quarter of a marathon, or running for 10â15 kilometers (approx. 6.5â9 miles) without a rest. The former is held in many places around the world. Sisaket, a north-eastern province in Thailand, holds quarter marathons on the third Sunday of December every year.
From this you can see that the average male takes about 2 hours to complete a half marathon and the average women takes about 2.5 hours.The average man is therefore running each mile in 9.5 minutes and the average women in just over 12 minutes.he half marathon is an endurance race as it is over a long distance so stamina and then speed will always determine your best time. The fitter that you can become at running long distances then the better chance you will have of improving times. Age is also important.