ow Back to set Educational Micsoscapy Done What part of the gram-negative ceill
ID: 145189 • Letter: O
Question
ow Back to set Educational Micsoscapy Done What part of the gram-negative ceill wall is toxic? Describe the difference in cell membranes between 56 eukaryotes and bacteria 57 Describe the composition and function of the Glycocalyx or capsule in bacteria Describe five ways of prokaryote witl use their surface The cell envelop of a prokaryote consists of 59 what & another term tor Biotim? oht are the functions of apulen 02 Teichoic acids are unique to which type of bacteria 63 The ipopsinaccharide s part of the what type of ceirs outer membir ane 64 The lt ide is also caliedExplanation / Answer
55- In gram negative cell wall the outer membrane is made up of lipopolysaccharides . This LPS (lipopolysaccharides) part is toxic . It is a kind of endotoxin .
56-Eukaryotic cell differs from prokaryotic (bacterial cell ) in having membrane bound organelles and double layered nuclear membrane which is absent in prokaryotes . And cell membrane of eukaryotes is also different in composition ,it contains steroids in eukaryotes which are usually absent in bacteria.
57. Glycocalyx (capsule) is made up of long chain of polysaccharides . These polysaccharides are thus known capsular polysaccharides(CPL).
They are firmly attached to the plasma membrane.
Function- capsule provides protection against phagocytosis to bacteria . It also prevents bacteria from dessication as it also contains water.
58- 5 ways of prokaryotes use their surface components are-
1. Adhesion - surface appendages like fimbriae help in adhesion, capsule in capsular bacteria also have adhesive property.
2. DNA transfer- sex pili (surface appendages) helps in DNA transfer .
3. Locomotion-surface appendages like flagella and some pili help in locomotion.
4 . pathogenicity - toxins (outer membrane part) and capsule increases pathogenecity of bacteria.
5 . Protection- capsule and slime layer prevents them from phagocytosis.
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