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.
There 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.Third, the base for adenine is thymine in DNA and uracil in RNA.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.