Please choose one from parentheses . If possible, provide the explanation of the solution X-Ray crystallographic analysis of a protein crystal sometimes fails to reveal the positions of the first few residues of a polypeptide chain. In a protein crystal, the residues at the end of a polypeptide chain may experience
(fewer/more) intramolecular contacts and therefore tend to be (less/more) ordered (less/more) mobile in the crystal). If their (order/disorder) prevents them from generating a (incoherent/coherent) diffraction pattern. It mat be impossible to map their electron density.

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.