A rough analogy is when the oil in your car's engine is dirty and needs changing, it gets blackened, thick and sludgy. Thickened bile can't flow well. Since your intestines REQUIRE bile to stimulate movement, poor bile flow causes lack of peristalsis, which equals constipation.
A water molecule measure approximately 2.75 angstroms, making it one of the smallest of all molecules. One meter is 10 billion angstroms. The water molecule is shaped like a V, with two atoms of hydrogen extending at an angle of around 104 degrees from an atom of oxygen. Continue Reading.
DNA molecules have a consistant width of about 2.5 nanometers (a nanometer is one billionth of a meter; human hair has a thickness of roughly 20,000 nm to 180,000 nm), but the length of DNA molecules varies greatly. Scientists usually describe the length of DNA using a unit called kb or kbp. One kb is 1000 base pairs, the base pair being the basic repeating nucleotide unit of the DNA chain. Each base pair has a length of 0.33 nm. Plasmid DNA might have a length of 1-200 kb, or 0.33 nm to 66 nm. Bacterial chromosomal DNA length would be perhaps 3800 kb, or 1300 nm (1.3 microns).