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Which was first on the planet prokaryotes or eukaryotes group of answer choices?
We now know that prokaryotes were likely the first forms of cellular life on Earth, and they existed for billions of years before plants and animals appeared. The Earth and its moon are dated at about 4.54 billion years in age. via
Where would you expect to find thermophiles?
Although thermophiles are limited to bacteria and archaea, they are found in a wide range of environments, including coal refuse, hot-water tanks, and compost piles. This article will focus only on thermophiles from geothermal environments and are divided into the following groups. via
Which of the following is the requirement for life that viruses lack?
Because viruses do not consist of cells, they also lack cell membranes, cytoplasm, ribosomes, and other cell organelles. Without these structures, they are unable to make proteins or even reproduce on their own. Instead, they must depend on a host cell to synthesize their proteins and to make copies of themselves. via
Where do you expect to find thermophiles Where do you expect to find thermophiles?
Thermophiles are found in various geothermally heated regions of the Earth, such as hot springs like those in Yellowstone National Park (see image) and deep sea hydrothermal vents, as well as decaying plant matter, such as peat bogs and compost. via
What is the first cell on earth?
The first cells were most likely very simple prokaryotic forms. Ra- diometric dating indicates that the earth is 4 to 5 billion years old and that prokaryotes may have arisen more than 3.5 billion years ago. Eukaryotes are thought to have first appeared about 1.5 billion years ago. via
What were the first prokaryotes?
The first prokaryotes were adapted to the extreme conditions of early earth. It has been proposed that archaea evolved from gram-positive bacteria as a response to antibiotic selection pressures. Microbial mats and stromatolites represent some of the earliest prokaryotic formations that have been found. via
What organisms are called extremophiles?
Extremophiles are organisms that live in "extreme environments," under high pressure and temperature. Bacteria often form on the rocks near the hydrothermal vents. "Extremophiles" are organisms with the ability to thrive in extreme environments such as hydrothermal vents. via
Which bacteria can survive high temperatures?
These organisms can survive at very high temperatures. In the 1960s, heat resistant bacteria were discovered in hot springs in Yellowstone National Park. This bacteria, thermus aquaticus thrives at temperatures of 70°C (160°F) but can survive temperatures of 50°C to 80°C (120°F to 175°F). via
Which bacteria is most resistant to high temperatures?
Regarding the most and least resistant pathogens to heat, S. senftenberg 775W, L. monocytogenes and some strains of S. aureus would be the most heat resistant, whereas Campylobacter would be even the least heat-resistant one (Sagarzazu et al., 2010b). via
Is a virus a prokaryote?
Viruses are neither prokaryotic or eukaryotic. Viruses are not made of cells. Viruses cannot replicate on their own. Most scientists do not consider viruses to be living. via
What are 3 diseases caused by viruses?
Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. via
What are 5 characteristics of viruses?
These are: 1) attachment; 2) penetration; 3) uncoating; 4) replication; 5) assembly; 6)release. As shown in , the virus must first attach itself to the host cell. via
What are Cryophiles?
Psychrophiles or Cryophiles (adj. cryophilic) are extremophilic organisms that are capable of growth and reproduction in cold temperatures. They can be contrasted with thermophiles, which thrive at unusually hot temperatures. via
How do thermophiles affect microorganisms?
The Genomic Evolution of Thermophiles. Environmental changes such as temperature shifts induce genomic evolution, which in turn provides the bacteria with thermal-tolerant abilities to survive under high temperatures. via
Are Psychrophilic bacteria that can survive at low temperatures?
Psychrophiles or cryophiles (adj. psychrophilic or cryophilic) are extremophilic organisms that are capable of growth and reproduction in low temperatures, ranging from −20 °C to +10 °C. via