Three-Domain System
Biology ⇒ Biological Classification
Three-Domain System starts at 11 and continues till grade 12.
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Describe one reason why the Three-Domain System is considered more accurate than the Five-Kingdom System.
Describe one structural feature that distinguishes Eukarya from the other two domains.
Describe one way in which the Three-Domain System has impacted our understanding of microbial diversity.
Describe the main criterion used to separate the three domains in the Three-Domain System.
Explain why Archaea are considered more closely related to Eukarya than to Bacteria.
Explain why ribosomal RNA (rRNA) is used to determine evolutionary relationships in the Three-Domain System.
Explain why the Three-Domain System is considered a phylogenetic classification system.
Name one major difference between the cell walls of Bacteria and Archaea.
Which of the following characteristics is unique to Archaea?
(1) Peptidoglycan cell walls
(2) Ether-linked membrane lipids
(3) Nucleus
(4) Photosynthesis
Which of the following domains contains organisms with circular chromosomes?
(1) Bacteria
(2) Archaea
(3) Eukarya
(4) Both 1 and 2
Which of the following domains includes both unicellular and multicellular organisms?
(1) Bacteria
(2) Archaea
(3) Eukarya
(4) Both 1 and 3
Which of the following is a reason for the separation of Archaea from Bacteria?
(1) Similar metabolic pathways
(2) Differences in rRNA sequences
(3) Presence of chloroplasts
(4) Multicellularity
Fill in the blank: Eukarya includes kingdoms such as Plantae, Animalia, Fungi, and ________.
Fill in the blank: The domain ________ includes all animals, plants, fungi, and protists.
Fill in the blank: The genetic material in Bacteria is located in the ________.
Fill in the blank: The three domains are Bacteria, ________, and Eukarya.
True or False: All members of the domain Bacteria are unicellular.
True or False: All prokaryotes are classified under the domain Bacteria.
True or False: Archaea and Bacteria are more closely related to each other than either is to Eukarya.
True or False: Eukaryotic cells can be found in all three domains.
