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Most are not. Gram positive archaea have a thick, single cell membrane. Gram negative archaea have two thinner membranes with a region in between them called the periplasm. The periplasm make make up 40% of certain archaea bacteria. The illustrated mechanisms of methanogen metabolism all require a membrane across which a Na+ and H+ chemical-electric gradient can be produced. This is not possible in gram positive archaea.
There may be another mechanism of metabolism which yields methane. Those methanogens that make use of the substrates H2+CO2, formate, methanol, methylamines and acetate are all gram negative.
What else can I help you with?
Is Staphylococcus saprophyticus gram positive or negative?
Yes. Staphylococci are classified as gram positive bacteria and appear as purple spheres when Gram stained.
Is tetanus gram positive or gram negative?
Tetanus is caused by the bacterium Clostridium tetani, which is a Gram-positive bacterium.
Is pityrosporon ovale gram positive or gram negative?
Pityrosporon ovale is a type of yeast that is gram positive.
Is staphylococcus a gram-negative or gram-positive bacterium?
Staphylococcus is a gram-positive bacterium.
Is lactobacillus casei is a gram negative bacteria or gram positive?
The Bacteria Sarcina lutea is Gram Positive Because If You Perform the Gram Test It Will Turn The Violet Color Which indicates It's Positiveness. What Makes It Positive Is the Peptidoglycan Located Within The The Bacterium
Is Staphylococcus saprophyticus gram positive or negative?
Yes. Staphylococci are classified as gram positive bacteria and appear as purple spheres when Gram stained.
Is MRSA gram positive or gram negative?
gram positive
Micrococcus luteus gram positive or gram negative?
Gram Positive.
Is Bacillus Cereus gram positive or negative?
It's a gram positive rod
Is tetanus gram positive or gram negative?
Tetanus is caused by the bacterium Clostridium tetani, which is a Gram-positive bacterium.
Is pityrosporon ovale gram positive or gram negative?
Pityrosporon ovale is a type of yeast that is gram positive.
Is staphylococci epidermidis gram-negative or gram-positive?
gram positive
Is bacillius subtilis gram positive or gram negative?
Gram positive
Is sporosarcina gram positive?
Yes, Sprosarcina is gram positive. It also has flagella (halophilia)
Candida albicans gram positive or gram negative?
Candida albicans is a yeast and belongs to the fungal kingdom, so it does not have a gram classification like bacteria. Gram staining is a technique used to differentiate between gram-positive and gram-negative bacteria based on the composition of their cell walls.
Is botulism gram positive or gram negative?
Spore forming, gram positive rods
Is azospirillum a gram positive bacteria?
Gram positive
