Bacteria in the α-proteobacterial _______ clade are the most abundant organisms on Earth and demonstrate unique adaptations to life in the oligotrophic open ocean.
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Bacteria in the α-proteobacterial _______ clade are the most abundant organisms on Earth and demonstrate unique adaptations to life in the oligotrophic open ocean.
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- Gram-negative nitrogen-fixing bacteria found in association with plant roots are deeply branching bacteria. betaproteobacteria. alphaproteobacteria. gammaproteobacteria. cyanobacteria.When conditions are unfavorable, some bacteria:Bacteria and archaea are similar in size. Explain what other characteristics bacteria and archaea have in common and the differences between them.
- 47)Which process is only carried out by prokaryotes eutrophication weathering of phosphate rich rocks biological nitrogen fixation primary production carbon fixationRecently, a microbe that is able to digest cellulose was discovered in a hot spring with an average temperature of 95°C. This microbe most likely belongs to which of the following groups? A. Archaea B. Proteobacteria C. Cyanobacteria D. SpirochetesWhat major group of prokaryotes generates oxygen by photosynthesis? Group of answer choices Spirochetes Cyanobacteria Proteobacteria Gram-positive bacteria
- The genus Ferroplasma consists of a few species of acid-loving archaea. One species, F. acidarmanus, was discovered to be the main component of slime streamers (a type of biofilm) deep inside an abandoned California copper mine (Figure 4.11A). F. acidarmanus cells use an ancient energy-harvesting pathway that combines oxygen with ironsulfur compounds in minerals such as pyrite. This reaction dissolves the minerals, so groundwater that seeps into the mine ends up with extremely high concentrations of metal ions such as copper, zinc, cadmium, and arsenic. The reaction also produces sulfuric acid, which lowers the pH of the water around the cells to zero. Despite living in an environment with a composition similar to hot battery acid, F. acidarmanus cells maintain their internal pH at a cozy 5.0. Thus, researchers investigating Ferroplasma metabolic enzymes were surprised to discover that most of the cells enzymes function best at very low pH (Figure 4.11B). A. Deep inside one of the most toxic sites in the United States: Iron Mountain Mine, in California. The water in this stream, which is about 1 meter (3 feet) wide in this photo, is hot (around 40C, or 104F), heavily laden with arsenic and other toxic metals, and has a pH of zero. Slime streamers growing in it are a biofilm dominated by a species of archaea, Ferroplasma acidarmanus. B. pH profiles of four enzymes isolated from F. acidarmus. Researchers had expected these enzymes to function best at the cells cytoplasmic pH (5.0). What does the dashed line signify?Which of the following types of bacteria can contaminate water sources in hospitals and also cause pulmonary diseases or infections? Question 9 options: Mycobacterium spp. Hydrobacterium spp. Escherichia coli Shigella spp.The bacteria which oxidize various inorganic substancesand use the released energy for the synthesis of food arecalled _______________.(a) Archaebacteria(b) Heterotrophic bacteria(c) Photosynthetic autotrophic bacteria(d) Chemosynthetic autotrophic bacteria Please try to break the solutions into as many steps as practically possible and the steps should come one by one and they should be short and crisp and plagiarism-free.
- Pseudopeptidoglycan is a characteristic of the walls of ________. a. eukaryotic cells b. bacterial prokaryotic cells c. archaean prokaryotic cells d. bacterial and archaean prokaryotic cellsBacteria of the Proteobacteria that are intracellular parasites are members of the betaproteobacteria. alphaproteobacteria. gammaproteobacteria. alphaproteobacteria and betaproteobacteria. alphaproteobacteria and gammaproteobacteria.Which group of Archaea live in anaerobic (no oxygen) conditions such as garbage dumps? Group of answer choices Halophiles Thermophiles Methanogens