Replacing your home's windows to improve its overall resale value is an investment to consider carefully. For the average-sized U.S. home, installing an entire set of brand-new windows can easily cost more than $10,000.
A molecule of DNA is double-stranded. The molecule has the shape of a double helix, typically right handed (B form DNA).The DNA molecule consists of two complementary strands oriented in an antiparallel fashion. Each strand is composed of nucleotides.he twisted ladder metaphorA DNA molecule is often likened to a spiral (or twisted) ladder. In this analogy, the rungs of the ladder are the base pairs (A-T and G-C). The sides of the ladder are the sugar-phosphate backbones of the two strands. This refers to B form DNA.
Molecular geometry is the three-dimensional shape of a molecule. To determine molecular geometry, first find the number of electron domains surrounding the molecule's central atom. An electron domain may come in four forms: a single bond, double bond, triple bond, or unbonded electron pair.Each is one electron domain.here are two possible shapes: trigonal planar and bent. To find out which it is, determine how many of the electron domains you counted around its central atom are made up of bonds and which--if any--of unbonded electron pairs. If all three are made up of bonds, the molecular geometry is trigonal planar.