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 nucleus of a cell contains chromosomes chromosomes: Rod shaped bodies found in the nucleus of cells that contain genetic information (DNA). that carry genetic information.Most body cells have the same number of chromosomes, but this varies between species.hromosomes are made from long, coiled molecules of DNA [DNA: The material inside the nucleus of cells, carrying genetic information. DNA stands for Deoxyribonucleic Acid. ] . A gene gene: The basic unit of genetic material inherited from our parents.