Related Questions

Consider the following statements regarding genetic code and choose the correct answer:
1. The genetic code is degenerate
2. In all amino acids the first two bases are the same in all the codons that represent a particular amino acid
3. The number of codons an amino acid can claim is proportional to the frequency of the amino acid in proteins
4. Amino acids with codons ending in U or A also have codons ending in C or G respectively
The common amino acids are also called as alpha-amino acids because they contain their amino group attached to the alpha carbon.
Non-essential amino acids are those amino acids that our body doesn’t contain and acquires it through food.
Proteins are made by incorporating standard amino acids. How many standard amino acids are there in nature?
Proteins are made up of amino acids. These amino acids are linked together by which of the following bonds?
_________ amino acids are commonly found in milk proteins, including the essential amino acids.
Natural proteins are composed primarily of 20 α-amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH 1.5?
How many amino acids are essential amino acids?
The peptide formation involves two amino acids covalently joined together between the carboxyl group of one amino acid and the amino group of another.
Analysis of a hexapeptide using enzymatic cleavage reveals the following result:
• Amino acid composition of the peptide is: 2R, A, V, S, Y
• Trypsin digestion yields two fragments and the compositions are: (R, A, V) and (R, S, Y)
• Chymotrypsin digestion yields two fragments and the compositions are: (A, R, V, Y) and (R, S)
• Digestion with carboxypeptidase A yields no cleavage product.
Given: Trypsin cleaves at carboxyl side of R. Chymotrypsin cleaves at carboxyl side of Y. Carboxypeptidase A cleaves at amino side of the C-terminal amino acid (except R and K) of the peptide.
The correct amino acid sequence of the peptide is: