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The simplest of evidence is that the prokaryotes are separated into two distinct groups and it is claimed that Archaea, which look very like conventional bacteria on the outside, are as different from bacteria as we are! The reasoning comes from their ribosomal RNA. Since ribosomes have a role in protein synthesis, they tend to remain unchanged in evolution. This is because any mutation is likely to impair their function. But mutations do accumulate very slowly, in subtle and random ways which don't affect them too much. The Archaea live in all sorts of weird places that bacteria wouldn't be able to survive such as oil deposits deep in the earth, in hot springs and very salty water.
Hope this helps, just did my Biology homework which was this :)
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How are living organisms currently categorized?
Living organisms are currently classified into three large groups called Domains. These domains are the archaea, bacteria, and eukaryote. Each of these domains are further broken down into kingdoms and within those kingdoms there are further subgroups.
Why are there 3 domains?
In biology, the domain refers to the highest possible classification of organisms. It was created by Carl Woese in 1990 in order to emphasize microbial diversity and recognize fundamental differences between archaea and bacteria.
Which of the three domains contains organisms which are prokaryotes?
The domain Bacteria contains organisms that are prokaryotes. These organisms lack a nucleus and other membrane-bound organelles.
Who divised the concept of the three domains used today?
Carl Woese is credited with devising the concept of the three domains of life - Bacteria, Archaea, and Eukarya. This classification system is based on genetic and biochemical differences among organisms.
Bacteria archaea and eukarya are three?
Bacteria, Archaea, and Eukarya are the three domains of life, representing the highest level of classification for organisms. Bacteria and Archaea are prokaryotic, while Eukarya encompasses all eukaryotic organisms. Each domain is distinct based on their cellular structures, biochemistry, and genetic makeup.
What are three domains used to classify organisms?
Bacteria and Archaea and Eukarya
What three domains used to classify organisms?
Bacteria and Archaea and Eukarya
What characteristics are used to classify organisms into domains and kingdoms?
.All of the following are used to classify organisms into domains and kingdoms EXCEPT ____.Color of body
What are the 3 Domains?
The three domains are Bacteria, Archaea, and Eukarya. These domains classify living organisms based on their cell type and structure. Bacteria and Archaea are both prokaryotic domains, while Eukarya includes all organisms with eukaryotic cells.
What are the 3 domains used to classify living things?
Bacteria, Archaea (prokaryotes), Eukarya (eukaryotes)
What three organisms are used to place organisms into domains and kingdoms?
bacteria, archaea, and eukarya
The three domains of organisms are based mainly on?
The three domains of organisms are based mainly on differences in cell structure, molecular makeup, and genetic makeup. These domains include Bacteria, Archaea, and Eukarya. Each domain represents a distinct lineage of life forms with unique characteristics.
What are two traits used to classify organisms into each domain?
Two traits used to classify organisms into each domain are cell type (prokaryotic or eukaryotic) and cellular structure (presence or absence of a nucleus). These traits help differentiate between the three domains of life: Archaea, Bacteria, and Eukarya.
How many different domains of life are there?
There are so many domains of life there are three
What are the 3 domains to classify living things?
The three-domain system is a biological classification divides cellular life forms into archaea, bacteria, and eukaryote domains.
How are living organisms currently categorized?
Living organisms are currently classified into three large groups called Domains. These domains are the archaea, bacteria, and eukaryote. Each of these domains are further broken down into kingdoms and within those kingdoms there are further subgroups.
How do scientists classify organisms into different Kingdoms?
Scientists use a variety of criteria, such as genetic information, cell structure, and metabolic processes to classify organisms into different Kingdoms. This classification is based on similarities and differences in these criteria among organisms. The current system of classification uses three domains (Bacteria, Archaea, Eukarya) and further divides organisms into six Kingdoms (Animalia, Plantae, Fungi, Protista, Archaea, Bacteria) based on these criteria.
