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When using Biuret reagent what indicates the presence of proteins?
Biuret solution turns a shade of purple if proteins are present. Specifically, it turns a shade of purple if peptide bonds are present. A peptide bond is the bond formed between amino acids.
Give the principles and significance of the biuret test?
The biuret reaction is based on the reduction of Cu2+ to Cu+ which then complexes with the nitrogen atoms on the peptide bonds. This reactionis carried out at high pH and gives a violet colour. It is the amide bond (common to all proteins) which is resposible for the colour.
Compounds formed between two nonmetals will have which bond?
Covalent Bond occurs between two non metals.
What type of bond is formed between iodine and carbon?
Iodine and Carbon form a covalent bond. Moreover, this bond is nonpolar. Cheers, Caroline
Which bond type is formed between two polar molecules that contain hydrogen?
a hydrogen bond
What happens when amino acids are joined to form a polypeptide chain?
An amino acid links with another amino acid through a condensation reaction to form a peptide bond. This process continues until a polypeptide chain is formed.
What type of covalent bond that joins two amino acids together in a polypeptide is best called?
The covalent bond that joins two amino acids together in a polypeptide is called a peptide bond. This bond forms between the amino group of one amino acid and the carboxyl group of another amino acid, leading to the release of a water molecule in a condensation reaction.
Do peptide bond link amino acids?
Amino acids do not have hydrogen bonds. They only have an alpha corbon atom connected to 4 groups namely: Hydrogen A variable R group An amide group A carboxyl group
What do you call the covalent bonds that produce polypeptide's primary structure?
The covalent bonds between amino acids are called peptide bonds. It is a bond between the carboxyl group of one amino acid and the amino group of another amino acid. Amino acids are bonded through condensation reactions, which produces a water molecule.
What is a 5 residue polypeptide?
Basically, proteins are long chains of amino acids, which are linked together through a chemical bond known as a peptide bond. They can be hundreds of amino acids in length. Peptides, which qualify as proteins, are just shorter chains of amino acids, generally between 2 and 100 amino acids. In biochemistry, amino acids are also referred to as residues; thus a 5 residue polypeptide is just a 5 amino acid long peptide, linked together with a peptide bond between each residue.
What type of bond is used in forming proteins?
When monosaccharides are joined together by dehydration synthesis then it is called glycosidic linkage, it is a covalent bond. When lipids are being bonded together the bond is called an ester bond. When amino acids are joining together to form a polypeptide then the bonds are called peptide bonds.
What do amino make?
Amino acids bond by peptide bonds to make a polypeptide. Proteins are made of polypeptides.
What is the bond called between the first and second amino acids in a peptide bond?
a peptide bond
Definition of Peptide bond?
A peptide bond is a covalent chemical bond that forms between the carboxyl group of one amino acid and the amino group of another amino acid during protein synthesis. It is essential for linking amino acids together to form polypeptide chains.
What do you call the covalent bond that hold amino acids together?
The covalent bond that holds amino acids together is called a peptide bond. This bond forms between the carboxyl group of one amino acid and the amino group of another amino acid through a dehydration synthesis reaction.
Is a protein a polypeptide?
A polypeptide chain is made up amino acids that form from a peptide bond. The polypeptide chain makes up a protein; therefore, the type of protein is contingent on the number of chains present.
What kind of a bondnis formed during translation?
A bond formed during translation is a peptide bond. It forms between the amino acids in the growing polypeptide chain being synthesized by the ribosome. The formation of the peptide bond occurs through a condensation reaction between the amino group of one amino acid and the carboxyl group of another amino acid.
