DNA molecules are composed of repeating subunits called nucleotides. A nucleotide is made of three parts: a nucleobase, a certain type of sugar (deoxyribose in the case of DNA â¦ nucleotides), and one or more phosphate groups.There are four different nucleobases found in DNA: adenine, cytosine, guanine, and thymine.NA molecules are composed of repeating subunits called nucleotides. A nucleotide is made of three parts: a nucleobase, a certain type of sugar (deoxyribose in the case of DNA â¦ nucleotides), and one or more phosphate groups. There are four different nucleobases found in DNA: adenine, cytosine, guanine, and thymine.
According to multiple studies, the Hummer H2 has an average mileage between 9 and 15 miles per gallon. Due to the potential repercussions of such extremely low gas mileage on the environment, the Hummer brand has long been a popular target for environmentalists.
But engineering executive Paul Elio thinks the time has come for the commuter car he has shown here. He hopes to sell it for as little as $6,800 and claims gas mileage as high as 49 miles per gallon in the city, 84 mpg on the highway. It has one door, two seats and three wheels.