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16 July, 11:16

The surface layer (s-layer) of prokaryotes choose one:

a. Is found only in archaea.

b. Is present all the time in all bacteria.

c. May be lost from bacteria cultured in the lab.

d. Is composed primarily of saccharin.

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  1. 16 July, 13:02
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    Answer;

    -May be lost from bacteria cultured in the lab

    Explanation;

    - The S-layer is a surface paracrystalline layer that forms the outermost cell envelope covering the entire bacterial cell, and represents a predominant surface antigen, found in almost all archaea, as well as in many types of bacteria.

    -Since S-layers are found in gram-positive and gram-negative bacteria and archaea, they can be associated with quite different supramolecular cell envelope structures. In gram-positive bacteria and archaea, the S-layer subunits are linked to the peptidoglycan-containing layer or to the pseudomurein.
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