Alanine and Phenylalanine are which type of amino acids?

  • A
    Amino acids with non-polar $R$ groups
  • B
    Amino acids with polar and uncharged $R$ groups
  • C
    Amino acids with polar and negatively charged $R$ groups
  • D
    Amino acids with polar and positively charged $R$ groups

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Which factor causes the denaturation of proteins?

Identify $X$ in the given chemical structure: $H_3N^+ - CH(R_1) - C(=O) - X - CH(R_2) - COO^-$.

Amino acids with polar and negatively charged '$R$' groups are ..........

What are proteins called when they are associated with non-protein components in addition to amino acids?

Which of the following is an aromatic amino acid?

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