NEET BIOLOGY

Detailed explanation-1: -All cells fall into one of these two broad categories. Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes-pro means before and kary means nucleus. Animals, plants, fungi, and protists are all eukaryotes-eu means true-and are made up of eukaryotic cells.

Detailed explanation-2: -Cells fall into one of two broad categories: prokaryotic and eukaryotic. The predominantly single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes (pro-= before; -karyon-= nucleus). Animal cells, plant cells, fungi, and protists are eukaryotes (eu-= true).

Detailed explanation-3: -Both prokaryotic and eukaryotic cells have structures in common. All cells have a plasma membrane, ribosomes, cytoplasm, and DNA. The plasma membrane, or cell membrane, is the phospholipid layer that surrounds the cell and protects it from the outside environment.

Detailed explanation-4: -There are two basic types of cells: prokaryotic cells, which lack a nucleus, and eukaryotic cells, which contain a nucleus. Prokaryotic cells are found in single-celled organisms, such as bacteria. Eukaryotic cells are found mainly in multicellular organisms.