It is a substance that takes part in and undergoes change during a reaction
Answer:
A. cell wall cross-link formation.
Explanation:
The bacterial cell wall has peptidoglycan which is a heteropolymer of two different monomers. These are N -acetylmuramic acid and N -acetylglucosamine. Peptide cross-links formed by the enzyme transpeptidase join the chains of these monomers together to make multiple layers of the cell wall. Penicillin is an antibiotic that does not allow the enzyme " transpeptidase" to form the cross-linked. The bacteria treated with penicillin lyse in a hypotonic solution.
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Limulus polyphemus are the source of cells for the LAL test used to detect bacterial contamination of surgical tools.
Limulus amebocyte lysate (LAL) is an aqueous extract of blood cells from the Limulus polyphemus which is used in LAL test. LAL test includes the reaction between LAL and bacterial endotoxin lipopolysaccharide (LPS), which is a membrane component of gram-negative bacteria. LAL test is widely used for the detection and quantification of bacterial endotoxins.
