Describe the traits that separate Archaea from other single-celled organisms.
Archea too belong to the Prokaryotes (other single celled organisms like bacteria). However archea vary in functions from other single celled organisms. Traits of archea resemble more with Eukaryotes.
Some of the major traits that separate archea from other single celled organisms can be as;
* Archea are single celled and simple structures while as other single celled like bacteria have complex structures.
* Archea are usually found in extreme conditions like hot springs, ocean depths.
* Cell wall in archea made up of pseudopeptidogylcan , while as in other single celled organisms it is made of peptidogylcan.
* Archea do not follow glycolysis or Krebs cycle but follow some similar pathways.
* Archea reproduce by asexual methods like binary fission, fragmentation, budding. On the other hand
Other single celled organisms have spore formation to grow in extreme conditions.
* In archea thymine is absent in tRNA, while it is present in other single celled organisms.
* Introns are present in archea and have not been found in other single celled organisms.
* RNA polymerase is complex in archea.
* Archea are non pathogenic while as other single celled organisms are pathogenic.
Describe the traits that separate Archaea from other single-celled organisms.
QUESTION 19 All of the following describes organisms in the domains Bacteria and or Archaea except O Cell wall O Multicellular O Single celled O Prokaryotic
1. Over what proportion of the earth’s history were there only single-celled living organisms? ______ 2. Over what proportion of the earth’s history have multi-celled organisms existed? ______ 3. Over what proportion of the earth’s history have mammals been a dominant part of the fauna? ____ 4. Over what proportion of the earth’s history have modern humans existed? ______
4) A water sample from a hot thermal vent contained a single-celled organism that had a cell wall but lacked a nucleus. What is its most likely classification? A) Eukarya B) Archaea C) Animalia D) Protista
Many single-celled organisms propel themselves through the water with long tails, which they wiggle back and forth. (The most obvious example is the sperm cell.) The frequency of the tail's vibration is typically about 10-15 Hz. To what range of periods does this range of frequencies correspond?
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Describe variation among protists in organization and other traits
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