Answer:
1. Either Bacteria or Archaea
2. Eukarya
3. The three Domains are Bacteria, Archaea, and Eukarya.
4. Prokaryotes
Explanation:
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1. Either Bacteria or Archaea
Reference Material-
"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."
"The Archaea and Bacteria domains are both entirely composed of small, single-celled organisms and seem very similar, but they also have significant differences. Both are composed of prokaryotic cells, which are cells without a nucleus. In addition, both domains are composed of species that reproduce asexually (asexual reproduction) by dividing in two. Both domains also have species with cells surrounded by a cell wall, however, the cell walls are made of different materials. Bacterial cell walls contain the polysaccharide peptidoglycan. Lastly, Archaea often live in extreme environments including hot springs, geysers, and salt flats. Bacteria do not live in these environments."
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2. Eukarya
Reference Material-
"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."
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3. The three Domains are Bacteria, Archaea, and Eukarya.
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4. Prokaryotes
Reference Material-
Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles. All prokaryotic cells are encased by a cell wall.
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