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Characteristics of Prokaryotes (Kingdom-Monera)

  • Christensen & Dougherty - gave the term ‘prokaryota’ and ‘eukaryota’
  • C. B. Van Neil - Divided the living organisms into prokaryotes and eukaryotes.

Main characteristic of prokaryotes:

  • Cell wall: -

Cell wall of prokaryotes is made up of peptidoglycan (or murein) which is a type of mucopeptide.

The structure of peptidoglycan has two parts

(A) Polysaccharides: - They are made up of glucose, mannose, galactose and amino sugars units.

Amino sugars → N-acetyl glucosamine, N-acetyl muramic acid

(B) Amino acids: - Some amino acids are present in the cell wall of prokaryotes.

  1. Diaminopimelic acid - This non… (283 more words) …

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Division - Euglenophyta - EUGLENOIDS

  • Habitat: Majority of them are fresh water organisms found in stagnant water.

  • Forms: The members of this phylum clearly illustrate the impossibility of distinguishing “plants” from “animals” among the protists. They devoid of cellulosic cell wall. Interlocking proteinaceous strips arranged in a helical pattern form a flexible structure called the pellicle, which lies within the cell membrane of the euglenoids. Because its pellicle is flexible, a euglenoids is able to change its shape.

  • Previously Euglenoids were placed in plant kingdom due to their photosynthetic ability. But due to the absence of cell wall and animals like nutrition some scientists placed… (268 more words) …

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