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Q: What is the importance of the binomial classification system of Linnaeus? A: Binomial nomenclature as the name suggests is the naming of all the organisms by using a specific fo Q: Identify the most important proteins and other solutes present in blood plasma. A: the most important proteins and other solutes present in blood plasma are as follows. Q: AKS 5c1: The model below represents the process of protein synthesis. What is the best description f A: The molecules that are found in the living cells are called biomolecules. The four main biomolecules Q: Describe several instances in which genetically modifi ed bacteria and viruses are used in medicine

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The three-domain system is a biological classification introduced by Carl Woese et al. The key difference from earlier classifications is the splitting of archaea from bacteria. Woese argued, on the basis of differences in 16S rRNA genes , that bacteria, archaea, and eukaryotes each arose separately from an ancestor with poorly developed genetic machinery, often called a progenote. To reflect these primary lines of descent, he treated each as a domain, divided into several different kingdoms. Originally his split of the prokaryotes was into Eubacteria now Bacteria and Archaebacteria now Archaea.

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For example, it separates the presence of a nucleus.

But eukarya have a nucleus. Eukaryotic cells have Lire nucleus that houses chromosomes and DNA. Furthermore, eukarya have organelle like mitochondria and chloroplasts all within a cell membrane. Even though single-cell eukarya exist, eukaryotes are mostly multicellular. For example, the plant and animal kingdoms are mostly multicellular. On the other hand, the protozoa, fungi, and algae kingdoms have unicellular eukarya. Eukarya are resistant to traditional antibiotics.

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This protects their envelope and maintains its shape. So by definition, prokaryotes have existed long before the evolution of a nucleus such as those found in eukarya. Bacteria cover a large group of unicellular microorganisms. These single-cell organisms are tiny and not visible to the naked eye. Peptidoglycan is in the cell wall of bacteria. This Lice an essential component of the cell envelope.

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This feature can only be found in bacteria. Archaea are the oldest of the 3 domains of life.

They make up a group of the first organisms to appear on Earth. We know this because they are used to extreme environments like those during the early Earth. This is because they are only found in the harshest environments.

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For example:. As for their anatomy, Archaea resembles features of both eukarya and bacteria. For example, they are single-cell, have no nucleus, and look like bacteria for structure. Hence their close relation to bacteria.]