EVERYDAY SCIENCE

Detailed explanation-1: -They don’t have a membrane-bound nucleus to store their genetic material. It is instead kept in a nucleoid that floats in the cytoplasm of the cell. Genetic material is generally grouped together in the nucleoid, which floats in the cytoplasm of bacterial cells.

Detailed explanation-2: -The DNA of most bacteria is contained in a single circular molecule, called the bacterial chromosome. The chromosome, along with several proteins and RNA molecules, forms an irregularly shaped structure called the nucleoid. This sits in the cytoplasm of the bacterial cell.

Detailed explanation-3: -In organisms such as humans, DNA is organised into structures called chromosomes inside a nucleus, a membrane-bound compartment within each cell. Bacteria lack a nucleus, and how bacterial DNA is organised has puzzled biologists for many years.

Detailed explanation-4: -The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.