Gram Negative -- Eubacteria
Evolutionary Milestones
Eubacteria have no evolutionary milestones since they are the start of the polygenetic tree.
Habitat
Eubacteria live in normal temperatures and resources. They are the most abundant.
Anatomical/Structural Features
Eubacteria have a cell wall, flagella (for movement), ribosomes (for protein synthesis), pili for reproduction, plasmids (circular DNA), and chromosomes. They have no nucleus; instead, they have a nucleoid region. They are unicellular and prokaryotic.
Their cell walls have a thin peptidoglycan layer, which is why they are gram negative. This thin peptidoglycan layer makes the cell wall slightly permeable and says the bacteria is not as resistant to antibiotics.
Cocci bacteria are spheres and occur in strains, bacilli bacteria are rod shaped, and spirilla bacteria are spiral shaped.
Symmetry
Eubacteria have no symmetry.
How They Acquire Nutrients
Gram nagative eubacteria can be autotrophic or heterotrophic.
What They Eat
Some gram negative eubacteria are photosynthetic (they can make their own food from sunlight) and some absorb food, such as iron, sulfur, or digestive food, from their environment.
What Eats Them
Gram negative eubacteria is eaten by fungi and other bacteria.
Mobility
Archaebacteria use flagella, a whip-like projection, to move.
Reproduction
Eubacteria reproduce asexually through binary fission. Binary fission is where the circular DNA is copied and the cell divide with each cell having an identical copy of DNA.
Eubacteria have an adaption where there can undergo conjugation. Conjugation is the process of exchanging genetic information via cell-to-cell contact. The cells attach by their pili, which bridges the cells' cytoplasms to each other, so that DNA is transferred. Conjugation could enhance the cell's survival because the new DNA mutates to resist antibiotics.
Development
Since gram negative eubacteria reproduce asexually, they do not go through developmental stages. They are born genetically identical to their parent cell.
Examples
Some examples of gram negative eubacteria include hemophilius, pneumonia, and salmonella.
Eubacteria have no evolutionary milestones since they are the start of the polygenetic tree.
Habitat
Eubacteria live in normal temperatures and resources. They are the most abundant.
Anatomical/Structural Features
Eubacteria have a cell wall, flagella (for movement), ribosomes (for protein synthesis), pili for reproduction, plasmids (circular DNA), and chromosomes. They have no nucleus; instead, they have a nucleoid region. They are unicellular and prokaryotic.
Their cell walls have a thin peptidoglycan layer, which is why they are gram negative. This thin peptidoglycan layer makes the cell wall slightly permeable and says the bacteria is not as resistant to antibiotics.
Cocci bacteria are spheres and occur in strains, bacilli bacteria are rod shaped, and spirilla bacteria are spiral shaped.
Symmetry
Eubacteria have no symmetry.
How They Acquire Nutrients
Gram nagative eubacteria can be autotrophic or heterotrophic.
What They Eat
Some gram negative eubacteria are photosynthetic (they can make their own food from sunlight) and some absorb food, such as iron, sulfur, or digestive food, from their environment.
What Eats Them
Gram negative eubacteria is eaten by fungi and other bacteria.
Mobility
Archaebacteria use flagella, a whip-like projection, to move.
Reproduction
Eubacteria reproduce asexually through binary fission. Binary fission is where the circular DNA is copied and the cell divide with each cell having an identical copy of DNA.
Eubacteria have an adaption where there can undergo conjugation. Conjugation is the process of exchanging genetic information via cell-to-cell contact. The cells attach by their pili, which bridges the cells' cytoplasms to each other, so that DNA is transferred. Conjugation could enhance the cell's survival because the new DNA mutates to resist antibiotics.
Development
Since gram negative eubacteria reproduce asexually, they do not go through developmental stages. They are born genetically identical to their parent cell.
Examples
Some examples of gram negative eubacteria include hemophilius, pneumonia, and salmonella.