Which of the following statements about peptide bonds are true?
peptide bonds form from nucleophilic attack by an electron pair on an alpha-amino nitrogen atom on an alpha-carboxyl carbon atom of another amino acid.
peptide bond formation is a hydrolysis reaction.
peptide bonds are amide linkages.
peptides are polymers of proteins. a tetrapeptide contains five amino acid residues.

The correct answers are: Peptide bonds form from nucleophilic attack by an electron pair on an alpha-amino nitrogen atom on an alpha-carboxyl carbon atom of another amino acid  and Peptide bonds are amide linkages.

A peptide bond is an amide type of covalent chemical bond. It is formed between two amino acids:  C1 (carbon end) of one alpha-amino acid and N2 (nitrogen end) of another. Peptide bonds are the basis for the formation of a peptide chain and consequently protein.  Formation of peptide bond is a condensation process, meaning that when two amino acids combine and link, water molecule is released and dipeptide is a product of that reaction.

The statement that is true about peptide bonds is;

"Peptide bonds form from nucleophilic attack by an electron pair on an alpha-amino nitrogen atom on an alpha-carboxyl carbon atom of another amino acid."

Keywords; Proteins, amino acids, peptide bonds

Level: High school

Subject: Biology

Topic: Macro-molecules

Sub-topic: Peptide bonds and amino acids

[content deleted] - user123802726recklesschicken

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above