Q:

How are archaea and bacteria different?

A:

Quick Answer

Unlike bacteria, archaea are able to live in extreme environments, some produce methane, their plasmid membranes are unique compared to other lifeforms and their cell walls lack peptidoglycan, which is present in bacteria cell walls. There are three main forms of archaea: thermophiles, halophiles and methanogens.

Know More

Full Answer

Some of the key differences between archaea and bacteria are:

  • They usually live in extreme conditions. While it is possible to find bacterial extremophiles, the majority are archaea.
  • While the bacteria phospholipid membrane features ester links between polar heads and fatty acid cells, the archaea phospholipid membrane has ether links.
  • Bacterial cell walls contain peptidoglycan and archaea cell walls do not.
  • There are differences between bacteria and archaea RNA. Bacterial RNA polymerase has 14 subunits only, whereas archaea has several sets of eight to 12 subunits.
  • Bacterial tRNA forms formaldehyde, whereas archaea tRNA forms methane

There are three main forms of archaea:

  • Methanogens produce large amounts of methane gas, and so they are often used in sewage plants. They are also present in cow digestive systems.
  • Halophiles love salt, which means they are most frequently found in areas like the dead sea.
  • Thermophiles are able to withstand extremely hot temperatures. They are present in hot springs, volcano vents and acidic soils. It is thermophile archaea that make the hot springs at Yellowstone National Park look bright.
Learn more about Biology

Related Questions

  • Q:

    What are fun facts about archaebacteria?

    A:

    Archaebacteria include many unique characteristics and traits: they comprise one kingdom of living organisms, are among the oldest life forms on earth and prefer to live in the most extreme environments on the earth to name a few. Archeaebacteria are often grouped with eubacteria, although the two are quite distinct. Archaebatecteria predate eubacteria by millions of years and are more closely related to eukarya than actual bacteria.

    Full Answer >
    Filed Under:
  • Q:

    What are the three types of archaea?

    A:

    The three types of archaea are the crenarchaeota, the euryarchaeota and the korarchaeota. Archaea is a group of single-celled microorganisms that come in a variety of shapes and survive extreme conditions. Some of them require oxygen, while others do not.

    Full Answer >
    Filed Under:
  • Q:

    How do fungi obtain food?

    A:

    Microbe World indicates that fungi absorb food from their immediate surroundings directly through their cell walls unlike animals, which eat food, and plants, which produce their own food through the process of photosynthesis. Kew Gardens adds that fungi function like an inside-out version of an animal's stomach. Instead of eating food and digesting it internally, fungi first dissolve food into simpler nutrients and then absorb the food after they digest it.

    Full Answer >
    Filed Under:
  • Q:

    Do bacteria have cell walls?

    A:

    Bacteria do not have any cell walls, however, all bacteria have a protective cell membrane that encases their cytoplasm. Genetic data and other biological structures essential for cell function are found in cytoplasm.

    Full Answer >
    Filed Under:

Explore