Microbiology - Micro Organisms - Discussion
Discussion Forum : Micro Organisms - Section 1 (Q.No. 2)
2.
The oldest eukaryotic organisms are considered to be
Discussion:
20 comments Page 1 of 2.
Adeola said:
5 years ago
The answer is A : diplomonads like Giardia.
Giardia lamblia is a binucleated, flagellated protozoan parasite that inhabits the upper small intestine of its vertebrate hosts. The entire life cycle, which can be completed in vitro, is simple with cycling between a vegetative trophozoite and a highly resistant cystic form. The parasite is one of the earliest diverging eukaryotes known and more than 95% of the genome is sequenced. This makes Giardia an excellent model system for studies of basic eukaryotic processes like cell differentiation.
Giardia lamblia is a binucleated, flagellated protozoan parasite that inhabits the upper small intestine of its vertebrate hosts. The entire life cycle, which can be completed in vitro, is simple with cycling between a vegetative trophozoite and a highly resistant cystic form. The parasite is one of the earliest diverging eukaryotes known and more than 95% of the genome is sequenced. This makes Giardia an excellent model system for studies of basic eukaryotic processes like cell differentiation.
Haroon james said:
1 decade ago
Prokaryotic cells are classified into two domains.
1. Archaea.
2. Eubacteria.
The Archaea have unique characteristics but share its features with Eubacteria & with 3rd domain, Eukarya, too.
That's why Archaea is considered to be the oldest eukaryotic organisms.
1. Archaea.
2. Eubacteria.
The Archaea have unique characteristics but share its features with Eubacteria & with 3rd domain, Eukarya, too.
That's why Archaea is considered to be the oldest eukaryotic organisms.
(1)
Khush sharma said:
7 years ago
At the pre-historic time, there were meteor showers and other natural disasters.
Archaea bacterias are the only to have been survived in that climate as Carl Woese differentiated it in his 7 kingdom classification.
So they can be the first one.
Archaea bacterias are the only to have been survived in that climate as Carl Woese differentiated it in his 7 kingdom classification.
So they can be the first one.
R.V.Ramchandar said:
1 decade ago
Archaea are prokaryotes. However Archaea have characteristics of both prokaryotic and eukaryotic characters. Hence it seems to be the oldest eukaryotes or forerunners of eukaryotes.
Lizy said:
1 decade ago
Since Archaea belong to kingdom of single microorganism, with no cell nucleus, their are considered to be the oldest prokaryotic organisms not eukaryotes.
Ketaki shinde said:
7 years ago
Diplomonads are the oldest Eukaryotic organism.
They are parasites in humans.
Apart from this Protists, fungi and animals are also Eukaryotic.
They are parasites in humans.
Apart from this Protists, fungi and animals are also Eukaryotic.
Nishtha said:
6 years ago
Archae is a prokaryote not a eukaryote. In the question, it was asked about the bacteria which was bacteria which resembles archae.
(2)
Diksha singla said:
9 years ago
In archaea, an absence of nuclear membrane temperature. It is the unique feature that distinguishes them from bacteria.
Debbie said:
1 decade ago
Why it is the oldest Eukaryote? Archaea is a Prokaryotic along with bacteria. Eukaryotes are FUNGI/ANIMALS.
VIKASH SINGH said:
9 years ago
Archaea have some character related to eukaryotic but it can't be considered under eukaryotic organisms.
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