DNA Sony In the living world there are millions of different kinds of (1)
How are these made by cells? It has been found that
protein synthesis in a cell is controlled by a complex
macromolecule called (2) This compound is not a
protein but a (3) A nucleic acid is made up of 3
parts. A 5-Carbon (4) molecule, nitrogen containing
(5), and a (6) group. DNA looks like a ladder
twisted into a shape known as (7). Each side of the
"ladder" is a long strand made of connecting nucleic acids.
Each base is joined by a weak (8). to a base on the other
strand forming "rungs" in the ladder. The bases form
complementary pairs. Adenine bonds with (9)
cytosine bonds with (10). During DNA (11) the
hydrogen bonds break and each strand finds new
complimentary bases.