Transcription of two genes. (a) RNA polymerase moves from the 3â² end of the template strand, creating an RNA strand that grows in a 5â² â 3â² direction (because it must be antiparallel to the template strand).
The atoms in sugar do not form ions; instead, they share their electrons. The type of bond that forms from the sharing of electrons between the atoms of the table sugar is a covalent bond. Table sugar has a much more complex chemical structure than salt.
This glycosidic bond links C#1 of the left-hand glucose molecule to C#4 of the right-hand glucose molecule. (The Hs bonded to these Cs are left out for clarity.) This C#1 has it's O, from what used to be it's OH, in the alpha(a) position, so this is sometimes referred to as an a(14) linkage.