A spiral staircase like the one shown can be a model of the structure of a DNA molecule.In this model, what do the steps on the staircase represent?A.A series of amino acidsB.A series of phosphate partsC.Pairs of sugar partsD.Pairs of nitrogen bases

DNA strands are coiled in to a spiral shape called a ______________________________________________.

The steps that make up the DNA ladder is called "Double Helix" which is made up of 4 bases called?

The DNA molecule resembles a ____________________.Question 2Select one:a.spiral noodleb.twisted double helixc.a banjod.a grain of salte.None of the above

The diagram models a pattern in a series of nitrogen bases on one strand of a DNA molecule. Each color represents a specific nitrogen base.Which pattern models a deletion mutation in DNA?A.B.C.D.

Draw the complete structures of all nucleotides and short nucleic acid molecules