1) Select the three domains into which all of Earth\'s life forms are grouped .
ID: 292967 • Letter: 1
Question
1) Select the three domains into which all of Earth's life forms are grouped . Animals Plants Eukaryotes Fungi . Bacteria Protists Archaea 2) The following feature makes archaea distinct from other groups of organisms They have a cell nucleus. " They commonly live under extreme temperature and salinity They have cell membranes "They are multicellular organisms 3) The presence of archaea in rocks can be determined because: They are bigger than bacteria. Lipids and fatty acids are associated with archaea. They are the only group that uses the chemical isoprene They have a cell nucleus. 4) The presence of archaea has been inferred for rocks as old as: 1.8 billion years .2.8 billion years 3.8 bllion years * 4.5 billion years ) The geologic time when archaea first appeared was the .Paleozoic .Mesozoic . Cenozoic Hadean Archaean . Proterozoic 6) The earliest eukaryotic fossils are thought to occur in rocks how old? 600 million vears 1.8 billion years 2.5 billion years 3.5 billion years 7) In which geologic eon/era are the oldest eukaryotic fossils found? Hadean Archaean .Paleozoic . Mesozoic . Cenozoic . Proterozoic 8) The kingdoms of animals, fungi, plants and protists belong to which domain? Eukaryotes Bacteria .Archaea *ProkaryotesExplanation / Answer
1. The three-domain system is a biological classification introduced by Carl Woese that divides cellular life forms into archaea, bacteria, and eukaryote domains.
2.Archaea commonly live under extreme environment
They were originally discovered and described in extreme environments, such as hydrothermal vents and terrestrial hot springs. They were also found in highly saline, acidic, and anaerobic environments.
3. They are only group to use isoprene
Because the particular isoprene structures are unique to archaeans, and because they are not as prone to decomposition at high temperatures, they make good markers for the presence of ancient Archaea
4. B is correct option
the oldest known sediments containing Archaea on Earth at about 3.8 billion years old
5.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.