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Determine about the prokaryotic cell
While we describe in detail the structure of a eukaryotic cell, it will be useful to examine the structural features of a typical prokaryotic cell as well. Escllericllia coli is an organism found in the intestinal tract of all human beings, and represents a typical prokaryotic organism, which has been intensively investigated. An E.coli cell is about 2pm long and 1 pm in diameter (Fig.l.2). Its cell wall is made of a rigid framework called the peptidoglycan, consisting of polysaccharide chains cross linked by peptide units. The partial structure of a peptidoglycan is shown in figure below:
Chromosomes and Their Organization During division phase , the duplicated chromatin fibres become extremely shortened (= condensed), by coiling and folding ,into short
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what are the excretory organs protozoa
nervous system structure
a - HELIX In this intra molecular hydrogen bonds are present The polypeptide chain is spirally coiled, generally in a clock-wise or right handed fashion. Glycine
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What is the spontaneous generation hypothesis? The spontaneous generation hypothesys, or abiogenesis, asserts that life on earth has come from nonliving material. For instance,
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