Question

write a note on eubacteria​

Answer 1

Explanation:

• Eubacteria are single-celled prokaryotic microorganisms that have a range of characteristics and are found in various conditions throughout all parts of the world.
• All types of bacteria fall under this title, except for archaebacteria.
• Since eubacteria is so common, it comprises one of the three domains of life; the three domains are Archaea, Bacteria, and Eukarya.
• Eubacteria, or microorganisms lacking a defined membrane nucleus, have several general characteristics.
• All are enclosed by a cellular wall, which is made up of peptidoglycans in a cross-linked chain pattern. This gives the wall of the bacteria the strength needed to maintain its shape and size during changing environments.
• Small molecules can diffuse through the cell wall, but often a proton gradient must first be established in order for molecule exchange to properly occur. Unlike eukaryotes, bacteria have cholesterol present in the membrane to enhance permeability properties of the membrane and increase stiffness.
• Similar to eukaryotes, bacteria also have a plasma membrane within the cell wall.
• Some bacteria may have a flagella, or a projection composed of protein filaments, that is used for movement.
• Other bacteria may have pili, which are small projections all over the outside of the cell, and are used for sticking to surfaces and transferring DNA.
• When a large amount of bacteria are attached to a surface and are surrounded by a polysaccharide sac, this is referred to as a biofilm. This complex has high antimicrobial resistance.

Answer 2

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