“The ability to visualize enzymes at a single molecule ... the DNA pinned in place, it is straightforward to trace the motion of fluorescently-labelled proteins under a microscope and view ...

But what, exactly, is DNA? In short, DNA is a complex molecule that consists of many ... Double-stranded DNA consists of two polynucleotides that are arranged such that the nitrogenous bases ...

It carries the genetic instructions for the development, functioning, growth, and reproduction of all known organisms and many viruses. DNA is a complex molecule that consists of two strands coiled ...

She had found that DNA can exist in two forms, depending on the relative humidity in the surrounding air. This had helped her deduce that the phosphate part of the molecule was on the outside.

These bases are the rungs of the DNA ladder. (It takes two bases to form a rung -- one for each side of the ladder.) A sugar molecule, a base, and a phosphate molecule group together to make up a ...