1. What is the primary protein structure?
A) Three-dimensional arrangement of the entire polypeptide chain.
B) Sequence of a chain of amino acids.
C) Regular repeating patterns of hydrogen bonds.
D) Structure consisting of multiple amino acid chains.
2. Which type of bonding stabilizes the secondary protein structure?
A) Disulfide bridges
B) Hydrogen bonding
C) Ionic bonding
D) Van der Waals forces
3. The alpha-helix and beta-pleated sheet are examples of:
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
4. The tertiary protein structure is mainly determined by:
A) Hydrogen bonding
B) Disulfide bridges
C) Ionic bonding
D) All of the above
5. Which level of protein organization gives the overall three-dimensional shape to the protein?
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
6. What type of interaction is responsible for the folding of a protein into a globular shape?
A) Hydrogen bonding
B) Disulfide bridges
C) Hydrophobic interactions
D) Ionic bonding
7. Hemoglobin, composed of multiple subunits, is an example of which protein structure?
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
8. Which level of protein organization involves the formation of alpha-helices and beta-pleated sheets?
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
9. The interactions responsible for the quaternary protein structure are mainly:
A) Hydrogen bonding
B) Disulfide bridges
C) Ionic bonding
D) Hydrophobic interactionsNon-covalent interactions
10. Which level of protein organization is established during protein synthesis on the ribosomal surface?
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
11. Which type of bonding is responsible for the formation of disulfide bridges in the protein structure?
A) Hydrogen bonding
B) Disulfide bonding
C) Ionic bonding
D) Van der Waals forces
12. The spatial arrangement and interactions between multiple protein subunits are characteristic of which protein structure?
A) Primary protein structure
B) Secondary protein structure
C) Tertiary protein structure
D) Quaternary protein structure
Answers:
1. B) Sequence of a chain of amino acids.
2. B) Hydrogen bonding
3. B) Secondary protein structure
4. D) All of the above
5. C) Tertiary protein structure
6. C) Hydrophobic interactions
7. D) Quaternary protein structure
8. B) Secondary protein structure
9. D) Non-covalent interactions
10. A) Primary protein structure
11. B) Disulfide bonding
12. D) Quaternary protein structure
