Your child should know how to drink out of a cup before you take away the bottle. Many pediatricians tell parents to introduce sippy cups around 6 to 9 months. That's when kids commonly start drinking water and other liquids besides formula and breast milk.
The two DNA strands are known as polynucleotides since they are composed of simpler units called nucleotides. Each nucleotide is composed of a nitrogen-containing nucleobase âeither cytosine (C), guanine (G), adenine (A), or thymine (T)âas well as a monosaccharide sugar called deoxyribose and a phosphate group.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.
3. DNA has deoxyribose; RNA has ribose. 4. DNA stays in the nucleus; RNA can goes out of the nucleus. Same: 1. DNA and RNA are both made of blocks called nucleotides, consisting of sugar/phosphate/nitrogen base. 2. DNA and RNA share the bases adenine, cytosine, guanine.The phosphates are the same, of course.. DNA has deoxyribose; RNA has ribose. 4. DNA stays in the nucleus; RNA can goes out of the nucleus. Same: 1. DNA and RNA are both made of blocks called nucleotides, consisting of sugar/phosphate/nitrogen base. 2. DNA and RNA share the bases adenine, cytosine, guanine. The phosphates are the same, of course.