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Three-Domain System

Biology ⇒ Biological Classification

Three-Domain System starts at 11 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Three-Domain System. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
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.
Name the three domains in the Three-Domain System.
The Three-Domain System is primarily based on differences in which molecule?
Which domain contains extremophiles such as thermophiles and halophiles?
Which domain contains organisms that reproduce by binary fission?
Which domain includes organisms that can be autotrophic, heterotrophic, or mixotrophic?
Which domain includes organisms that can have cell walls made of cellulose or chitin?
Which domain includes organisms with membrane-bound organelles?
Which domain(s) can perform photosynthesis?
Which domain(s) have genes organized in operons?
Who proposed the Three-Domain System of classification?