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.
RNA and DNA differ in these ways: (1) DNA has deoxyribose sugar, and RNA has ribose sugar. (2) DNA is made up of these four bases: adenine & guanine, cytosine & thymine; R â¦ NA is made up of adenine & guanine, cytosine & URACIL, the difference being that in RNA, uracil replaces thymine.here are three main ways in which DNA differs from RNA. First, RNA is single-stranded unlike DNA which is double-stranded. Second, DNA contains deoxyribose while RNA contains â¦ ribose.