This is due to the similar electronic configuration (more importantly the number of valence electrons). Among the two groups given here, choice (b) Mg, Sr and Ba are alkaline earth elements (part of group IIA) in the periodic table. Other elements of this group are Be, Ca and Ra. All these elements form the alkaline earth metal group of the periodic table. All these elements have 2 valence electrons, which they can give up to attain a +2 charge as cations. They have certain common properties, including shiny and silver-white appearance.
The backbone of the DNA strand is made from alternating phosphate and sugar residues. The sugar in DNA is 2-deoxyribose, which is a pentose (five-carbon) sugar. The sugars are joined together by phosphate groups that form phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings.he backbone of the DNA strand is made from alternating phosphate and sugar residues. The sugar in DNA is 2-deoxyribose, which is a pentose (five-carbon) sugar. The sugars are joined together by phosphate groups that form phosphodiester bonds between the third and fifth carbon atoms of adjacent sugar rings.
Best Answer: ATP is made up of a Nitrogenous base Adenine while DNA can consist of Adenine, Guanine, Cytosine and Thymine. ATP contain the sugar Ribose, DNA contain the sugar Deoxyribose ATP consist of 3 Phosphate group, DNA is made up of one phosphate group.eport Abuse. ATP-has the base adenine,the sugar ribose and 3 phosphates.. A nucleotide in a DNA molecule would have the sugar deoxyribose, and one phosphate once it was part of the DNA. Also the nucleotides in DNA may contain the bases cytosine, guanine,adenine or thymine.