Formation Of Peptide Bonds And Condensation Reactions Quiz

A dipeptide is a molecule formed by the combination of two amino acids through a peptide bond. Therefore, it contains two amino acids.

A peptide bond connects two amino acids. A peptide bond is a covalent bond formed between the carboxyl group of one amino acid and the amino group of another amino acid. This bond is important in the formation of proteins, as it links amino acids together to form a polypeptide chain.

The correct answer is eupeptide because a peptide bond is formed when the carboxyl group of one amino acid reacts with the amino group of another amino acid, resulting in the formation of a covalent bond. The term "eupeptide" is not commonly used in scientific literature, but it can be inferred that it refers to a peptide bond that is formed between two amino acids.

The reaction through which a peptide bond is formed is called a condensation reaction. In this reaction, two amino acids join together, releasing a water molecule as a byproduct. This process involves the removal of a hydroxyl group from one amino acid and a hydrogen atom from the other amino acid, resulting in the formation of a peptide bond between the two amino acids. Therefore, the correct answer is condensation reaction.

A peptide bond is a covalent bond that forms between the carboxyl group of one amino acid and the amino group of another amino acid during protein synthesis. Covalent bonds involve the sharing of electrons between atoms, and in the case of a peptide bond, this sharing occurs between the carbon and nitrogen atoms of the amino acids. Ionic bonds involve the transfer of electrons between atoms, while hydrogen bonds are weaker interactions between a hydrogen atom and an electronegative atom. Therefore, the correct answer is a covalent bond.

The correct answer is "Characteristics of the peptide bond's partial double bond." Peptide bonds are formed between the amino acids in a polypeptide chain through a condensation reaction, resulting in the formation of a partial double bond between the carbonyl carbon and the nitrogen atom. This double bond character restricts rotation around the peptide bond, causing it to be planar. The planarity of the peptide bond is important for the overall structure and stability of proteins.

Macropeptides are composed of more than 100 amino acids. Amino acids are the building blocks of proteins, and macropeptides are a type of protein. The term "macro" indicates that these peptides are relatively large in size, consisting of a significant number of amino acids. Therefore, the correct answer is "More than 100 amino acids."

The correct answer is "Digested" because the word "peptide" is derived from the Greek word "peptein," which means "to digest." Peptides are short chains of amino acids that are formed during the digestion of proteins in the body. Therefore, "Digested" is the most appropriate option that aligns with the meaning of the word "peptide."

The correct answer is 190-230 nm. The wavelength of absorption for a peptide bond falls within this range. This is because peptide bonds contain a chromophore called the amide group, which absorbs light in the ultraviolet region. The absorption of light by the peptide bond is due to the presence of the double bond character in the C-N bond, which allows for electronic transitions to occur. Therefore, the wavelength of absorption for a peptide bond is in the range of 190-230 nm.

In a peptide bond, the hydroxyl group is substituted by nitrogen. This is because a peptide bond is formed between the carboxyl group of one amino acid and the amino group of another amino acid. The carboxyl group contains a carbon atom, an oxygen atom, and a hydroxyl group. During the formation of a peptide bond, the hydroxyl group is removed from the carboxyl group and is replaced by a nitrogen atom from the amino group of the other amino acid. This nitrogen atom then forms a covalent bond with the carbon atom, resulting in the formation of a peptide bond.