Q1. Which enzyme is responsible for breaking down ATP during muscle contraction?A. TroponinB. ATPaseC. Myosin kinaseD. Phosphatase
Q2. What is the name of the neurotransmitter responsible for muscle contraction?A. DopamineB. SerotoninC. AcetylcholineD. Epinephrine
Q3. Which type of muscle fiber is rich in mitochondria and adapted for endurance activities?A. Fast-twitch fibersB. Slow-twitch fibersC. White muscle fibersD. Non-striated muscle fibers
Q4. Which of the following conditions results from calcium deficiency and leads to involuntary muscle contractions?A. GoutB. ArthritisC. TetanyD. Osteoporosis
Q5. Which type of joint is found between the femur and tibia?A. Hinge jointB. Ball and socket jointC. Pivot jointD. Saddle joint
Q6. Which condition is caused by the degeneration of myelin sheath in neurons?A. Multiple sclerosisB. Muscular dystrophyC. Myasthenia gravisD. Arthritis
Q7. Which of the following muscle types is correctly matched to its characteristic?A. Skeletal muscle - InvoluntaryB. Smooth muscle - StriatedC. Cardiac muscle - BranchedD. Visceral muscle - Voluntary
Q8. Which of the following is a characteristic of smooth muscle?A. Striated and voluntaryB. Non-striated and involuntaryC. Striated and involuntaryD. Multinucleated
Q9. Which of the following conditions is caused by an autoimmune attack on myelin sheaths?A. Muscular dystrophyB. Multiple sclerosisC. Myasthenia gravisD. Arthritis
Q10. Which statement about myosin filaments is correct?A. Myosin filaments are thinner than actin filaments.B. Myosin heads contain ATPase activity.C. Myosin does not form cross-bridges with actin.D. Myosin filaments are composed of tropomyosin.