Human Physiology – Locomotion and Movement Quiz - ICSE Class 11 Biology

Free practice quiz: Human Physiology – Locomotion and Movement (ICSE Class 11 Biology). 44 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 11 Biology practice quiz has 44 multiple-choice questions on Human Physiology – Locomotion and Movement, and 44 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. During muscle contraction, the binding of calcium ions to troponin results in:

   1. The blocking of myosin-binding sites on actin.
   2. The release of ADP from myosin.
   3. The uncovering of myosin-binding sites on actin.
   4. The hydrolysis of ATP by actin.
   Show answer

   Answer: C. The uncovering of myosin-binding sites on actin.

   Calcium ions bind to troponin, which causes a conformational change in tropomyosin, thereby exposing the myosin-binding sites on the actin filaments.

2. Which of the following is a characteristic of slow-twitch muscle fibers (Type I)?

   1. High myoglobin content and resistance to fatigue
   2. Rapid force generation and susceptibility to fatigue
   3. Predominant reliance on anaerobic glycolysis
   4. Few mitochondria and small motor units
   Show answer

   Answer: A. High myoglobin content and resistance to fatigue

   Slow-twitch fibers are rich in myoglobin (which stores oxygen) and mitochondria, allowing for sustained aerobic respiration. They contract slowly but are highly resistant to fatigue.

3. Osteoporosis is a condition characterized by:

   1. Excessive bone formation
   2. Decreased bone mass and density, leading to increased fracture risk
   3. Inflammation of the joints
   4. Overgrowth of cartilage
   Show answer

   Answer: B. Decreased bone mass and density, leading to increased fracture risk

   Osteoporosis is a systemic skeletal disease characterized by low bone mass and microarchitectural deterioration of bone tissue, resulting in increased bone fragility and susceptibility to fractures.

4. The isometric contraction of a muscle occurs when:

   1. The muscle shortens, and the load is moved.
   2. The muscle lengthens, and the load is moved.
   3. The muscle generates tension, but its length does not change.
   4. The muscle shortens without generating significant tension.
   Show answer

   Answer: C. The muscle generates tension, but its length does not change.

   In an isometric contraction, the muscle produces force but does not shorten or lengthen. The tension generated is not enough to overcome the resistance, or the joint angle is being held steady.

5. Which of the following bone markings is a projection that serves as a point of attachment for muscles or ligaments?

   1. Fossa
   2. Foramen
   3. Tubercle
   4. Sinus
   Show answer

   Answer: C. Tubercle

   A tubercle is a small, rounded projection on a bone that serves as an attachment site for muscles and ligaments. Fossae are depressions, foramina are openings, and sinuses are air-filled cavities.

More questions in this quiz

Answers and explanations are in the full quiz.

1. The 'power stroke' during muscle contraction refers to:
2. The sarcolemma of a muscle fiber is equivalent to the:
3. Which component of the thin filament acts as a regulatory protein by blocking the myosin-binding sites on actin in a relaxed muscle?
4. The sarcoplasmic reticulum is a specialized form of endoplasmic reticulum responsible for:
5. A motor unit consists of:
6. Which of the following statements accurately describes the sliding filament theory of muscle contraction?
7. The absence of ATP after death leads to rigor mortis. This is because:
8. A single action potential arriving at the neuromuscular junction will typically elicit:
9. The excitation-contraction coupling mechanism ensures that:
10. In smooth muscle, the contraction is initiated by:
11. Which of the following joints allows for the greatest range of motion?
12. A ligament is a band of fibrous connective tissue that:
13. The primary function of cartilage in a synovial joint is to:
14. The periosteum is a membrane that:
15. Ossification is the process of:
16. Which type of joint is found between the carpals and metacarpals of the thumb, allowing for opposition?
17. The bending of the elbow is an example of:
18. The primary antagonist muscle to the biceps brachii during elbow flexion is the:
19. Arthritis is a general term for conditions that affect:
20. In a lever system, the pivot point is called the:
21. Which of the following is NOT a component of a synovial joint?
22. The primary role of red muscle fibers (Type I) in locomotion is:
23. The phenomenon of 'summation' in muscle contraction refers to:
24. Which of the following best describes the structure of a sarcomere?
25. The binding of ATP to the myosin head causes:
26. Which of the following is an example of an immovable joint (synarthrosis)?
27. The function of the M-line in the center of the sarcomere is to:
28. Which hormone is primarily responsible for regulating calcium levels in the blood, which directly impacts muscle function?
29. The term 'all-or-none' response in muscle contraction refers to:
30. Which of the following is a key difference between cardiac muscle and skeletal muscle?
31. The primary function of the endomysium is to:
32. In the context of locomotion, antagonistic muscle pairs are crucial because:
33. Which of the following terms describes the process of a muscle returning to its resting length after contraction?
34. The epimysium is the connective tissue sheath that:
35. Which of the following represents the correct order of muscle organization from smallest to largest?
36. The role of the cross-bridge in muscle contraction is to:
37. The hinge joint, like the elbow, primarily allows for:
38. The functional unit of contraction in a muscle fiber is called a:
39. Which of the following substances is a neurotransmitter released at the neuromuscular junction to initiate muscle contraction?

More quizzes

• Human Physiology – Neural Control and Coordination▶ Play
• Plant Physiology – Plant Growth & Development▶ Play
• Plant Physiology – Respiration in Plants▶ Play
• Plant Physiology – Transport in Plants▶ Play
• Structural Organisation – Anatomy of Flowering Plants▶ Play
• Structural Organisation – Morphology of Flowering Plants▶ Play

Browse all Biology quizzes

More to play