AP BIOLOGY

Detailed explanation-1: -The third domain, Eukarya, consists of organisms whose cells have a nucleus. It’s also the only domain that contains multicellular and visible organisms, like people, animals, plants and trees.

Detailed explanation-2: -According to Carl Woese, the Eukarya domain consists of four kingdoms, namely Protista, Plantae, Fungi and Animalia.

Detailed explanation-3: -Eukaryotes (meaning ‘true nuclei” where “karyote” is derived from the ancient Greek for “kernel") include fungi, protozoa, eukaryotic algae, and of course plants and animals including ourselves. Eukaryotic cells have a nucleus containing chromosomal DNA bounded by membranes.

Detailed explanation-4: -Both Bacteria and Archaea are prokaryotes, single-celled microorganisms with no nuclei, and Eukarya includes us and all other animals, plants, fungi, and single-celled protists – all organisms whose cells have nuclei to enclose their DNA apart from the rest of the cell.

Detailed explanation-5: -Answer and Explanation: The correct answer is D) They have introns and a nuclear envelope.