Podcast
Questions and Answers
What type of amino acids have ionized carboxyl groups in their side chains?
What type of amino acids have ionized carboxyl groups in their side chains?
- Polar, negatively charged (correct)
- Hydrophobic
- Polar, neutral
- Polar, positively charged
Which group of amino acids reacts with water to release a hydroxide anion?
Which group of amino acids reacts with water to release a hydroxide anion?
- Polar, positively charged (correct)
- Hydrophobic (nonpolar)
- Polar, negatively charged
- Polar, neutral
In which type of amino acids do all differences depend on their side-chain R groups?
In which type of amino acids do all differences depend on their side-chain R groups?
- Polar, neutral
- Polar, positively charged
- Polar, negatively charged
- Hydrophobic (correct)
What is the structural relationship between amino acids in a protein?
What is the structural relationship between amino acids in a protein?
Which amino acid terminal is written on the left in the structure of a peptide?
Which amino acid terminal is written on the left in the structure of a peptide?
What kind of reaction forms peptide bonds between amino acids?
What kind of reaction forms peptide bonds between amino acids?
What does the term 'protonation' refer to in chemistry?
What does the term 'protonation' refer to in chemistry?
In the context of pH, what does the pKa value indicate?
In the context of pH, what does the pKa value indicate?
What determines the isoelectric point (pI) of a molecule?
What determines the isoelectric point (pI) of a molecule?
Which amino acid has an isoelectric point (pI) defined by the average pKa values if it has more than 2 pKas?
Which amino acid has an isoelectric point (pI) defined by the average pKa values if it has more than 2 pKas?
What type of bond is responsible for stabilizing the tertiary structure of proteins?
What type of bond is responsible for stabilizing the tertiary structure of proteins?
How are hydrophobic interactions involved in maintaining the tertiary structure of proteins?
How are hydrophobic interactions involved in maintaining the tertiary structure of proteins?
