Podcast
Questions and Answers
How many commonly found amino acids are there in proteins?
How many commonly found amino acids are there in proteins?
- 18
- 20 (correct)
- 22
- 24
Which type of amino acids are considered hydrophilic?
Which type of amino acids are considered hydrophilic?
- Nonpolar amino acids
- Charged and polar amino acids (correct)
- Aromatic amino acids
- Aliphatic amino acids
What characterizes positively charged (basic) amino acids?
What characterizes positively charged (basic) amino acids?
- Fully protonated at low pH (correct)
- Fully deprotonated at high pH
- Have no ionizable groups
- Are always hydrophobic
What does a low pKa value indicate about an acid?
What does a low pKa value indicate about an acid?
Which amino acid is known for its role in forming disulfide bonds?
Which amino acid is known for its role in forming disulfide bonds?
What is the primary function of disulfide bonds in proteins?
What is the primary function of disulfide bonds in proteins?
What is the general structure of an amino acid?
What is the general structure of an amino acid?
Which statement best describes hydrophobic amino acids?
Which statement best describes hydrophobic amino acids?
What is the term for a chain of two amino acids?
What is the term for a chain of two amino acids?
How does the pH affect the ionization of amino acids?
How does the pH affect the ionization of amino acids?
Which amino acid is known for providing flexibility in proteins?
Which amino acid is known for providing flexibility in proteins?
What is the significance of the pKa value in amino acids?
What is the significance of the pKa value in amino acids?
What type of bond forms between two cysteine residues?
What type of bond forms between two cysteine residues?
Which amino acid has a side chain that can engage in hydrogen bonding due to its hydroxyl group?
Which amino acid has a side chain that can engage in hydrogen bonding due to its hydroxyl group?
What is the backbone structure of a polypeptide?
What is the backbone structure of a polypeptide?
What do we call the end of a polypeptide with a free amino group?
What do we call the end of a polypeptide with a free amino group?
What happens to the thiol (-SH) group of cysteine in a hydrophobic environment?
What happens to the thiol (-SH) group of cysteine in a hydrophobic environment?
Which of the following amino acids is classified as aromatic?
Which of the following amino acids is classified as aromatic?
What is the significance of the Henderson-Hasselbalch equation in relation to amino acids?
What is the significance of the Henderson-Hasselbalch equation in relation to amino acids?
What is the common name for a peptide composed of more than 50 amino acids?
What is the common name for a peptide composed of more than 50 amino acids?
Which amino acid is known for its role in stabilizing alpha-helices in proteins?
Which amino acid is known for its role in stabilizing alpha-helices in proteins?
What type of amino acids are typically found at the water/protein interface?
What type of amino acids are typically found at the water/protein interface?
What is the role of polar amino acids in proteins?
What is the role of polar amino acids in proteins?
Which amino acid's side chain is considered reactive due to its thiol group?
Which amino acid's side chain is considered reactive due to its thiol group?
What is the first protein to be sequenced?
What is the first protein to be sequenced?
How are amino acids represented in protein sequences?
How are amino acids represented in protein sequences?
What is the primary characteristic of aromatic amino acids?
What is the primary characteristic of aromatic amino acids?
What happens to the charge of acidic amino acids at low pH?
What happens to the charge of acidic amino acids at low pH?
What stabilizes the structure of proteins in an oxidizing environment?
What stabilizes the structure of proteins in an oxidizing environment?
Which of the following statements is true about the sequencing of proteins?
Which of the following statements is true about the sequencing of proteins?
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Capital of France (example flashcard)
Capital of France (example flashcard)
Paris
