The glial cells outnumber theneurones and the two cell types occupy a comparable amount of space in nervous tissue. The main glial cell types are, inthe central nervous system, astrocytes and oligodendrocytes and, in the peripheral nervous system, Schwann cells, entericglial cells and satellite cells.he glial cells outnumber theneurones and the two cell types occupy a comparable amount of space in nervous tissue. The main glial cell types are, inthe central nervous system, astrocytes and oligodendrocytes and, in the peripheral nervous system, Schwann cells, entericglial cells and satellite cells.
1 Cytosine is found in both DNA and RNA, but thymine is only found in DNA and uracil is only found in RNA.  A nucleotide is formed when a phosphate attahes to the 5' carbon of the sugar and one of the nitrogenous baseses attaches to the 1' carbon of the sugar.
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.