MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
Correct Answer: C. Calcium binding to troponin
Explanation:
Calcium changes the troponin-tropomyosin complex.
Tropomyosin moves away from actin binding sites.
Choose an option to check your answer.
Correct Answer: C. Through lymphatic vessels
Explanation:
Lymphatic capillaries collect excess interstitial fluid.
Lymph eventually drains into large veins.
Choose an option to check your answer.
Correct Answer: D. Calcium binding to troponin
Explanation:
Calcium changes the troponin-tropomyosin complex.
Tropomyosin moves away from actin binding sites.
Choose an option to check your answer.
Correct Answer: D. Through lymphatic vessels
Explanation:
Lymphatic capillaries collect excess interstitial fluid.
Lymph eventually drains into large veins.
Choose an option to check your answer.
Correct Answer: A. Calcium binding to troponin
Explanation:
Calcium changes the troponin-tropomyosin complex.
Tropomyosin moves away from actin binding sites.
Choose an option to check your answer.
Correct Answer: A. It paralyzes cilia and increases mucus accumulation
Explanation:
Smoke irritates airways and impairs ciliary beating.
Mucus and microbes are then cleared less effectively.
Choose an option to check your answer.
Correct Answer: B. Inflammation or degeneration of one or more joints
Explanation:
Arthritis causes joint pain, stiffness and impaired movement.
Different forms have inflammatory or degenerative causes.
Choose an option to check your answer.
Correct Answer: B. It paralyzes cilia and increases mucus accumulation
Explanation:
Smoke irritates airways and impairs ciliary beating.
Mucus and microbes are then cleared less effectively.
Choose an option to check your answer.
Correct Answer: C. Inflammation or degeneration of one or more joints
Explanation:
Arthritis causes joint pain, stiffness and impaired movement.
Different forms have inflammatory or degenerative causes.
Choose an option to check your answer.
Correct Answer: C. It paralyzes cilia and increases mucus accumulation
Explanation:
Smoke irritates airways and impairs ciliary beating.
Mucus and microbes are then cleared less effectively.
Choose an option to check your answer.
Correct Answer: D. Inflammation or degeneration of one or more joints
Explanation:
Arthritis causes joint pain, stiffness and impaired movement.
Different forms have inflammatory or degenerative causes.
Choose an option to check your answer.
Correct Answer: D. Destruction of alveolar walls and loss of surface area
Explanation:
Alveolar walls break down and elastic recoil decreases.
The effective respiratory surface becomes smaller.
