In some vehicles the retractor â not the latchplate â provides the locking part needed to keep a car seat in place at all times. The purpose of the retractor is to store the excess webbing. These retractors are usually present when a non-locking latchplate (sliding, sewn-on, or dynamic locking) is present.
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, kernel) is a membrane-enclosed organelle found in eukaryotic cells. It contains most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins such as histones to form chromosomes.The genes within these chromosomes make up the cell's nuclear genome.t contains most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins such as histones to form chromosomes.
The part of the DNA that actually codes for genetic info is nitrogen base. The bases vary from cytosine, guanine, thymine, and adenine. These four bases form millions of combi â¦ nations that code for all the genetic material in a cell. nucleus of a cell contains chromosomes that carry genetic  information. Chromosomes are made from long, coiled molecules of  DNA. A gene is a shorter region of DNA that ca â¦ rries the genetic  code for a particular characteristic. JD Heyl.