Essay on Bacteria - Your Article Library.
Bacterial cell Structure and Function. Bacterial are unicellular prokaryotic organism. Bacterial cell have simpler internal structure. It lacks all membrane bound cell organelles such as mitochondria, lysosome, golgi, endoplasmic reticulum, chloroplast, peroxisome, glyoxysome, and true vacuole.
Bacteria have a simple organization; they contain an external cell wall, a plasma membrane, circular DNA within the cytoplasm and ribosomes for protein synthesis. Some bacteria are encapsulated, meaning that they have a polysaccharide capsule outside their cell wall. Bacterial Cell Review - Image Diversity: bacteria.
They have some common parts found in both and other parts that are unique to each. A cell membrane is found in both plant and animal cells. It is the structure that surrounds the cell and protects it. Plant cells have a cell wall, a rigid structure surrounding the cell membrane. Animal cells do not have a cell wall.
Gram-negative bacteria do not retain the violet dye and are colored red or pink. “Compared to Gram-positive germs, Gram-negative bacteria are more resistant versus antibodies because of their impenetrable cell wall. These germs have a wide range of applications varying from medical treatment to commercial use and Swiss cheese production” (2 ).
The cell wall of archaea is pseudopeptidoglycan, as they have ether bonds with the branching of aliphatic acids, whereas bacteria have lipid membrane ester bonds with fatty acids. Archaea exactly do not follow glycolysis or Kreb cycle but uses similar pathway, but bacteria follows these pathways to produce energy.
Bacteria, Viruses and Prions Essay example. We’ve all heard of viruses, bacteria and the diseases they can harm us with, but many of us haven’t even heard of prions and most people probably don’t know specific details about viruses or even bacteria for that matter.
In bacteria, the cell wall is composed mainly of various polysaccharides. peptidoglycans. proteins. glycoproteins. lipids.
On the contrary to the gram positive bacteria, the cell wall of gram negative bacteria is much thinner, consisting of only 20% peptidoglycan. Gram negative bacteria also have two unique sections which surround the outer plasma membrane. They are the periplasmic space and the lipopolysaccharide layer.. The Essay on Cell Structures.
Unknown Bacteria Essay .identifying bacteria. The gram negative bacteria cell wall is a thin peptidoglycan layer and an outer cell membrane with a lipopolysaccharide layer. The gram positive bacteria cell wall is a single thick peptidoglycan layer. This wall forms in a mesh like formation of three layers of alternating material.
How do membranes and cell walls that surround cells control the movement of materials in and out of living cells? Relate membrane and wall structure to such processes as diffusion, osmosis, pinocytosis and phagocytosis. The surrounding cell walls and membranes can control the materials that pass in.
The Most Effective Antibiotic On Bacteria Biology Essay. The whole doc is available only. organizing an tremendous molecule with net-like construction. However, there are two different types of bacterial cell wall, which can be distinguished by Gram staining, a staining technique developed by Christian Gram in 1984 and still in usage today.
The composition of the cell wall differs significantly between the domains Bacteria and Archaea. The composition of their cell walls also differs from the eukaryotic cell walls found in plants (cellulose) or fungi and insects (chitin). The cell wall functions as a protective layer, and it is responsible for the organism’s shape. Some bacteria.
Gram positive bacteria have a distinctive purple appearance when observed under a light microscope following Gram staining. This is due to retention of the purple crystal violet stain in the thick peptidoglycan layer of the cell wall. Examples of Gram positive bacteria include all staphylococci, all streptococci and some listeria species.
