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Proteins MCQs

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1. What is the basic building block of proteins?





2. Which type of bond is primarily responsible for the secondary structure of proteins?





3. What is the primary structure of a protein?





4. Which of the following is an example of a globular protein?





5. Which protein is a major component of connective tissues in the body?





6. What type of protein structure is characterized by an alpha helix or beta-pleated sheet?





7. Which enzyme is responsible for the digestion of proteins in the stomach?





8. Which type of bond is involved in the tertiary structure of proteins?





9. What is the role of chaperone proteins?





10. Which amino acid contains a sulfur atom and forms disulfide bonds?





11. What is the function of enzymes in biological systems?





12. Which protein is found in muscle cells and is responsible for muscle contraction?





13. Which of the following proteins is involved in oxygen transport in muscles?





14. Which term describes the loss of a protein’s three-dimensional structure due to external factors?





15. Which protein is known for its role in the immune response?





16. Which structural level of proteins involves multiple polypeptide chains interacting with each other?





17. What type of bond links amino acids together in a protein chain?





18. Which type of protein functions as a transport molecule in the blood?





19. Which of the following proteins is a major component of hair and nails?





20. Which protein is involved in the clotting process of blood?





21. What is the function of structural proteins in cells?





22. Which amino acid is essential and must be obtained through the diet?





23. Which protein is responsible for storing and releasing iron in the body?





24. Which class of proteins is involved in cell signaling and communication?





25. Which protein is involved in the regulation of blood glucose levels?





26. Which amino acid is known for its role in neurotransmitter synthesis?





27. What is the role of antibodies in the immune system?





28. Which protein plays a key role in muscle contraction along with actin?





29. Which protein is primarily involved in the storage of oxygen in muscle tissues?





30. What is the role of enzymes in metabolic pathways?





31. Which protein is known for its role in maintaining osmotic balance in the blood?





32. Which protein structure level is determined by the unique sequence of amino acids?





33. What term describes proteins that are embedded in the lipid bilayer of cell membranes and facilitate transport?





34. Which protein is crucial for the formation of the extracellular matrix in tissues?





35. Which of the following proteins is involved in the process of muscle contraction by interacting with actin filaments?





36. Which enzyme is involved in the digestion of proteins in the small intestine?





37. Which term refers to the complex folding of a single polypeptide chain into a three-dimensional structure?





38. Which of the following proteins is involved in the transport of oxygen in the blood?





39. Which type of protein structure involves multiple polypeptide chains interacting?





40. Which of the following is a function of structural proteins?





41. Which protein type is responsible for the immune response by recognizing foreign molecules?





42. Which of the following amino acids is classified as essential?





43. Which protein is involved in the formation of blood clots?





44. Which type of protein is primarily responsible for regulating metabolic processes in the body?





45. What is the role of protein chaperones in cells?





46. Which protein is commonly used as a marker for muscle damage in medical tests?





47. Which amino acid is a precursor for the synthesis of serotonin and melatonin?





48. Which protein provides elasticity to tissues such as skin and blood vessels?





49. Which term refers to the loss of protein structure due to high temperatures or changes in pH?





50. Which type of protein is involved in the repair of damaged tissues and maintenance of cellular structures?





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