Podcast
Questions and Answers
At what pH are amino acids fully protonated?
At what pH are amino acids fully protonated?
- pH = 3
- pH = 5
- pH = 7.2
- pH = 1 (correct)
What is the net charge of Lys at pH ≈ 3?
What is the net charge of Lys at pH ≈ 3?
- 0
- -1
- +1 (correct)
- +2
What is the net charge of Asp at pH ≈ 5?
What is the net charge of Asp at pH ≈ 5?
- 0
- -1 (correct)
- +1
- -2
At physiological pH (pH ≈ 7.2), what is the net charge of a non-polar amino acid like Ala?
At physiological pH (pH ≈ 7.2), what is the net charge of a non-polar amino acid like Ala?
What is the net charge of Lys at pH ≈ 10?
What is the net charge of Lys at pH ≈ 10?
What is the net charge of a protein rich in acidic amino acids (Asp and Glu) at physiological pH?
What is the net charge of a protein rich in acidic amino acids (Asp and Glu) at physiological pH?
Which type of amino acids must be provided in the diet or as supplements under severe physical stress, trauma, growth, cancer, or pregnancy?
Which type of amino acids must be provided in the diet or as supplements under severe physical stress, trauma, growth, cancer, or pregnancy?
Which amino acids can be converted to both glucose and ketone bodies when metabolized?
Which amino acids can be converted to both glucose and ketone bodies when metabolized?
What is the structure called where the positive and negative charges of an amino acid coexist?
What is the structure called where the positive and negative charges of an amino acid coexist?
Which type of amino acid is considered essential and must be obtained from the diet?
Which type of amino acid is considered essential and must be obtained from the diet?
How many amino acids are in a tripeptide?
How many amino acids are in a tripeptide?
Which amino acids can be converted to ketone bodies when metabolized?
Which amino acids can be converted to ketone bodies when metabolized?
What is the main force that stabilizes the primary structure of proteins?
What is the main force that stabilizes the primary structure of proteins?
What are the two most common secondary structures found in proteins?
What are the two most common secondary structures found in proteins?
How are the adjacent peptide chains or fragments connected in a beta sheet structure?
How are the adjacent peptide chains or fragments connected in a beta sheet structure?
Which of the following is NOT a basic amino acid?
Which of the following is NOT a basic amino acid?
What is the principle behind the technique of electrophoresis?
What is the principle behind the technique of electrophoresis?
What is the role of the quaternary structure in proteins?
What is the role of the quaternary structure in proteins?
What factor can denature proteins by weakening their stabilizing bonds?
What factor can denature proteins by weakening their stabilizing bonds?
Which of the following is NOT mentioned as a factor that can denature proteins?
Which of the following is NOT mentioned as a factor that can denature proteins?
What is the name of the protein in the human brain that misfolding leads to Alzheimer's disease?
What is the name of the protein in the human brain that misfolding leads to Alzheimer's disease?
What characteristic distinguishes prions in their infectious form from their normal form?
What characteristic distinguishes prions in their infectious form from their normal form?
What type of changes occur in the central nervous system (CNS) due to prion-mediated diseases?
What type of changes occur in the central nervous system (CNS) due to prion-mediated diseases?
How are prions transmitted to humans through cooked food?
How are prions transmitted to humans through cooked food?
What is the main role of fibrous proteins according to the text?
What is the main role of fibrous proteins according to the text?
Which type of proteins is mostly insoluble in water as mentioned in the text?
Which type of proteins is mostly insoluble in water as mentioned in the text?
What is the primary role of globular proteins based on the information presented?
What is the primary role of globular proteins based on the information presented?
Which level of protein structure involves proteins with multiple subunits connected mainly by what type of bonds?
Which level of protein structure involves proteins with multiple subunits connected mainly by what type of bonds?
Protein denaturation refers to the loss of what from proteins according to the text?
Protein denaturation refers to the loss of what from proteins according to the text?
Which protein listed is an example of a fibrous protein according to the text?
Which protein listed is an example of a fibrous protein according to the text?
