amino acid practice
Which of the following amino acids is most likely to participate in hydrogen bonding? Glycine Alanine Serine Leucine
Serine
Which of the following amino acids is most likely to be found in the interior of a globular protein? Glutamine Aspartic acid Alanine Tyrosine
Alanine
Which of the following amino acids has a basic side chain and is positively charged at physiological pH? Glutamine Histidine Arginine Cysteine
Arginine
Which of the following amino acids has a side chain capable of forming salt bridges? Tyrosine Arginine Valine Threonine
Arginine
Which amino acid side chain can form hydrogen bonds due to its carboxyl group? Alanine Aspartic acid Methionine Valine
Aspartic acid
Which amino acid side chain is most likely to be involved in ionic interactions? Valine Aspartic acid Serine Phenylalanine
Aspartic acid
Which amino acid side chain can form disulfide bonds? A. Serine B. Cysteine C. Methionine D. Tyrosine
Cysteine
Which of the following amino acids has a thiol group in its side chain? Methionine Asparagine Cysteine Threonine
Cysteine
Which type of bond or interaction is formed between the side chains of cysteine residues in a protein? Hydrogen bond Disulfide bond Ionic bond Hydrophobic interaction
Disulfide bond
Which of the following interactions contributes most significantly to the stability of protein secondary structure? Hydrophobic interactions Disulfide bonds Hydrogen bonds Ionic bonds
Disulfide bonds
Which amino acid side chain can participate in hydrogen bonding due to its amide group? Aspartic acid Glutamine Lysine Proline
Glutamine
Which amino acid side chain contains a carboxamide group that can form hydrogen bonds? Alanine Glutamine Leucine Valine
Glutamine
Which of the following amino acids has a side chain capable of forming hydrogen bonds? A. Leucine B. Valine C. Glutamine D. Proline
Glutamine
Which amino acid has a side chain that can act as a proton donor or acceptor in enzyme active sites? Glycine Histidine Alanine Isoleucine
Histidine
Which of the following bonds or interactions is most likely to stabilize the core of a globular protein? Hydrogen bonds Covalent bonds Hydrophobic interactions Ionic bonds
Hydrophobic interactions
Which type of interaction is commonly disrupted by the presence of detergents? Hydrogen bonds Ionic bonds Hydrophobic interactions Disulfide bonds
Hydrophobic interactions
Which of the following interactions is most sensitive to changes in pH? Hydrogen bonds Hydrophobic interactions Ionic bonds Van der Waals forces
Ionic bonds
Which of the following amino acids has a hydrophobic side chain and is often found in the interior of membrane proteins? Glutamic acid Tryptophan Lysine Leucine
Leucine
Which amino acid side chain can form ionic bonds with acidic amino acids? Glutamine Lysine Phenylalanine Glycine
Lysine
Which amino acid side chain is positively charged at physiological pH and can participate in ionic interactions? Aspartic acid Glutamic acid Lysine Serine
Lysine
Which type of bond is formed during the primary structure formation of proteins? Hydrogen bond Ionic bond Peptide bond Van der Waals forces
Peptide bond
Which of the following amino acids has a hydrophobic side chain? Arginine Glutamic acid Phenylalanine Asparagine
Phenylalanine
Which of the following amino acids has an aromatic side chain that can participate in pi-pi interactions? Phenylalanine Leucine Alanine Valine
Phenylalanine
Which type of non-covalent interaction occurs between aromatic side chains of amino acids? Hydrogen bonds Pi-Pi interactions Ionic bonds Disulfide bonds
Pi-Pi interactions
Which level of protein structure is least affected by changes in pH? Primary structure Secondary structure Tertiary structure Quaternary structure
Primary structure
Which amino acid side chain can participate in non-covalent interactions due to its cyclic structure? Proline Alanine Leucine Threonine
Proline
Which amino acid has a side chain that can engage in van der Waals interactions due to its large aromatic ring? Tryptophan Alanine Glutamine Lysine
Tryptophan
Which amino acid has a side chain that can participate in both hydrogen bonding and hydrophobic interactions? Serine Threonine Tryptophan Glutamic acid
Tryptophan
Which amino acid side chain can participate in hydrogen bonds and has a hydroxyl group? Phenylalanine Tyrosine Isoleucine Glycine
Tyrosine
Which amino acid side chain contains a hydroxyl group and can be involved in phosphorylation? Tyrosine Valine Lysine Tryptophan
Tyrosine
Which amino acid side chain is most likely to participate in hydrophobic interactions in the core of a protein? Aspartic acid Arginine Valine Glutamine
Valine
Which of the following interactions is the weakest? A. Hydrogen bond b. Ionic bond c. Covalent bond d. Van der Waals forces
Van der Waals forces
