â Noodle originated in China and the name is derived from a German nudel which means pasta, and spaghetti originated in Italy. â Noodle is thin and elongated in shape. Spaghetti is long, cylindrical in shape and differs in thickness. â Noodle is made of unleavened dough cooked in boiling water and oil.
1 The helix in the double helix means that the entire thing is wound up in a spiral. 2  DNA composition: purine and pyrimidine bases, sugars, phosphate. 3  Nucleotide = base (Adenine, Guanine, Thymine, Cytosine) + sugar + phosphate. 4  Nucleoside = base + sugar = Adenosine, Guanosine, Thymidine, Cytidine.
Whether the DNA is single stranded or double stranded, inside the cell it is always subjected to bending, folding, over winding and under winding. Such changes make stable DNA into unstable or vice versa, because energy constraints.