| 释义 |
Definition of archaea in English: archaeaplural nounɑːˈkiːəärˈkēə Biology Microorganisms which are similar to bacteria in size and simplicity of structure but radically different in molecular organization. They are now believed to constitute an ancient group which is intermediate between the bacteria and eukaryotes. 〔生〕原始细菌。亦称ARCHAEBACTERIA Also called archaebacteria Example sentencesExamples - Participants will also focus on a class of microbes known as the archaea, which literally means ‘ancient.’
- Bacteria and archaea often clone themselves, trade genes, and in some cases the microbes even merge together into a giant mass of DNA that then gives rise to spores.
- Unlike bacteria and archaea, eukaryotes have their DNA in linear pieces that are bound up with special proteins to make chromosomes.
- Marine plants literally live in a sea of bacteria, archaea, viruses, and fungi - some of which are bound to be pathogenic - yet they seldom get sick.
- Over the past three decades, bacteria and archaea have been found in some of the most inhospitable places on Earth.
Derivativesadjective & nounɑːˈkiːən Biology The conditions at Champagne Pool are ideal for thermophilic, mildly acidophilic archaeans such as the Sulfobales and Thermoproteales. Example sentencesExamples - In fact, there are fossil microbes known from throughout the Precambrian, but here a second problem surfaces - how do you distinguish fossil archaeans from fossil bacteria?
- Like bacteria, archaeans have no internal membranes and their DNA exists as a single loop called a plasmid.
- These pictures show an immense bloom of a halophilic (‘salt-loving’) archaean species, in a saline pond at a salt works near San Quintin, Mexico.
- Each pool has slightly different mineral content, temperature, salinity, etc., so different pools may contain different communities of archaeans and other microbes.
OriginModern Latin (plural), from Greek arkhaios 'primitive'. Definition of archaea in US English: archaeaplural nounärˈkēə Biology another term for archaebacteria Example sentencesExamples - Marine plants literally live in a sea of bacteria, archaea, viruses, and fungi - some of which are bound to be pathogenic - yet they seldom get sick.
- Bacteria and archaea often clone themselves, trade genes, and in some cases the microbes even merge together into a giant mass of DNA that then gives rise to spores.
- Unlike bacteria and archaea, eukaryotes have their DNA in linear pieces that are bound up with special proteins to make chromosomes.
- Over the past three decades, bacteria and archaea have been found in some of the most inhospitable places on Earth.
- Participants will also focus on a class of microbes known as the archaea, which literally means ‘ancient.’
OriginModern Latin (plural), from Greek arkhaios ‘primitive’. |