Transcript of Informal Reading Inventory. Dawn Talbott Definition: Informal Reading Inventory (IRI) Diagnostic assessment that is administered in a series of tests to evaluate different parts of a student's reading ability and performance. Betts regarded informal assessment a more accurate indicator of a student's reading ability.
Any reaction that combines two monomers in a reaction that generates H 2 O as one of the products is known as a dehydration reaction, so peptide bond formation is an example of a dehydration reaction.
In this type of structure a hydrogen bond forms between an amino acid and one four amino acids further along the chain. In a perfect alpha-helix, therefore, every peptide bond is hydrogen-bonded to two other peptide bonds in the chain length, but this is rarely the case in natural proteins.