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Multiple Choice Quiz on Protein Structure

This quiz is designed to assess your basic knowledge in ‘protein structure’. Questions come under ‘medium’ category. Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers.
Protein Structure

1. The primary structure is primarily maintained by
Peptide bond
Hydrogen bond
Ionic bond
Hydrophobic bonds
2. Which of the following statements are true regarding primary structure of proteins
Primary structure denote the number of amino acids in a protein
Primary structure denote the sequence of amino acids in a protein
Primary structure determines the biological activity of a protein
all of these
3. Which of the following amino acid is a alpha helix terminator
cysteine
alanine
proline
isoleucine
4. The secondary structure is primarily maintained by
Van der waals force
Hydrogen bond
Ionic bond
Hydrophobic bonds
5. Which of the following is the most common and stable conformation for a polypeptide chain
Alpha helix
Beta pleated sheets
Anti parallel beta pleated sheet
Tertiary structure
6. The amyloid protein deposition associated with Alzheimer’s disease is composed of
Alpha helix
Beta pleated sheets
Beta bends
Tertiary structure
7. In alpha helix, the bonding is between the
Adjacent amino acids
Carbonyl oxygen of one peptide bond to the NH group of the 4th amino acid away
Carbonyl oxygen of second peptide bond to the NH group of the 3rd amino acid away
Carbonyl oxygen of second peptide bond to the NH group of the 5th amino acid away
8. Which of the following statements are true regarding tertiary structure of proteins
3 dimensional structure of a protein
It is the biologically active conformation
Primary structure of protein determines the tertiary structure
All of these
9. The most common amino acid in beta bend is
cysteine
glycine
serine
methionine
10. Which of the following statements are true regarding quaternary structure of proteins
Refers to organisation and spatial arrangements of amino acids within a polypeptide chain
Refers to organisation and spatial arrangements of proteins with many polypeptide chains
Both a and b
None of these
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