3. Phosphate. In the DNA strand the phosphate groups alternate with deoxyribose. Each phosphate group is joined to carbon atom 3â of one deoxyribose and to carbon atom 5â of another. Thus each strand has a 3â end and a 5â end.The two strands are oriented in opposite directions.he DNA molecule is a polymer consisting of several thousand pairs of nucleotide monomers. Each nucleotide consists of the pentose sugar deoxyribose, a phosphate group and a nitrogenous base which may be either a purine or a pyrimidine. Deoxyribose and a nitrogenous base together form a nucleoside.
Renewable energy is too expensive. [Wind energy] is a more expensive way of producing energy than the alternative. (David Montgomery). Due to its abundance and low market price, coal combustion is the largest source of energy production in the world, accounting for 40% of all electricity worldwide.
Lutetium is the most expensive element that you could actually order and purchase. The price for 100 grams of lutetium is around $10,000. So, from a practical standpoint, lutetium is the most expensive element. The transuranium elements, in general, are extremely expensive.