NEET BIOLOGY

Detailed explanation-1: -The genetic information of eucaryotic cells has a hybrid origin-from the ancestral anaerobic eucaryote, and from the bacteria that it adopted as symbionts. Most of this information is stored in the nucleus, but a small amount remains inside the mitochondria and, for plant and algal cells, in the chloroplasts.

Detailed explanation-2: -Of all eukaryotic organelles, the nucleus is perhaps the most critical. In fact, the mere presence of a nucleus is considered one of the defining features of a eukaryotic cell. This structure is so important because it is the site at which the cell’s DNA is housed and the process of interpreting it begins.

Detailed explanation-3: -The eukaryotes have their DNA in a nucleus that is enclosed by a membranous nuclear envelope. The nucleus of the eukaryotes is surrounded in the cell by the cytoplasm. The organelles are located in the cytoplasm. Many of the organelles that are found in eukaryotes are not found in prokaryotes.

Detailed explanation-4: -Chromosomes are contained inside the cell’s nucleus . These are long, thin, threadlike structures made from molecules of DNA that store genetic information. Chromosomes are found in the nucleus of body cells in pairs-one chromosome is inherited from the mother and one is inherited from the father.

Detailed explanation-5: -Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.