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.
It's definitely not C, because a base and its complement exhibit weak electrical attractions. Both A and B are true. Phosphates and bases both bond covalently to the sugar. However, I think the question is asking it in terms of polymer structure, in which case a base wouldn't bind to a sugar molecule.