MCQ Biology Chapter 17: LOCOMOTION AND MOVEMENT, HS 1st year

 

MCQs on Locomotion and Movement

1. What type of movement involves the use of pseudopodia?
   a) Ciliary movement
   b) Amoeboid movement
   c) Muscular movement
   d) Flagellar movement
   Answer: b) Amoeboid movement

2. Which muscle type is under voluntary control?
   a) Smooth muscle
   b) Cardiac muscle
   c) Skeletal muscle
   d) Visceral muscle
   Answer: c) Skeletal muscle

3. What is the functional unit of contraction in a muscle fibre?
   a) Myofibril
   b) Sarcomere
   c) Sarcolemma
   d) Troponin
   Answer: b) Sarcomere

4. What pigment gives red muscle fibres their color?
   a) Hemoglobin
   b) Myoglobin
   c) Troponin
   d) Melanin
   Answer: b) Myoglobin

5. Which of the following bones form the axial skeleton?
   a) Femur and tibia
   b) Skull and vertebral column
   c) Clavicle and scapula
   d) Humerus and ulna
   Answer: b) Skull and vertebral column

6. What type of joint is present between the humerus and pectoral girdle?
   a) Ball and socket
   b) Hinge
   c) Pivot
   d) Gliding
   Answer: a) Ball and socket

7. Which protein masks the active sites on actin in a resting state?
   a) Myosin
   b) Tropomyosin
   c) Troponin
   d) Actin
   Answer: c) Troponin

8. Which type of rib is not connected ventrally?
   a) True ribs
   b) Vertebrochondral ribs
   c) Floating ribs
   d) Sternum ribs
   Answer: c) Floating ribs

9. What fluid is present in synovial joints?
   a) Cerebrospinal fluid
   b) Synovial fluid
   c) Interstitial fluid
   d) Lymph
   Answer: b) Synovial fluid

10. Which disorder is characterized by inflammation of joints due to uric acid accumulation?
    a) Arthritis
    b) Myasthenia gravis
    c) Osteoporosis
    d) Gout
    Answer: d) Gout

---

11. What structure connects a muscle fibre to a motor neuron?
    a) Synovial junction
    b) Neuromuscular junction
    c) Sarcomere bridge
    d) Motor plate
    Answer: b) Neuromuscular junction

12. Which type of muscle is responsible for the movement of food through the digestive tract?
    a) Skeletal muscle
    b) Cardiac muscle
    c) Visceral muscle
    d) Red muscle
    Answer: c) Visceral muscle

13. How many bones are present in the human skeletal system?
    a) 206
    b) 210
    c) 204
    d) 200
    Answer: a) 206

14. Which region of the vertebral column contains the highest number of vertebrae?
    a) Cervical
    b) Thoracic
    c) Lumbar
    d) Sacral
    Answer: b) Thoracic

15. Which is the longest bone in the human body?
    a) Tibia
    b) Humerus
    c) Femur
    d) Radius
    Answer: c) Femur

16. What type of cartilage is found in the pubic symphysis?
    a) Hyaline cartilage
    b) Elastic cartilage
    c) Fibrous cartilage
    d) Articular cartilage
    Answer: c) Fibrous cartilage

17. Which protein constitutes the thick filaments in a sarcomere?
    a) Actin
    b) Troponin
    c) Tropomyosin
    d) Myosin
    Answer: d) Myosin

18. What happens to the ‘I’ bands during muscle contraction?
    a) They increase in length
    b) They decrease in length
    c) They remain unchanged
    d) They disappear completely
    Answer: b) They decrease in length

19. What are the structural units of compact bone tissue?
    a) Osteons
    b) Chondrocytes
    c) Myofibrils
    d) Osteoblasts
    Answer: a) Osteons

20. What is the function of sarcoplasmic reticulum in muscle fibres?
    a) Storing oxygen
    b) Storing calcium ions
    c) Producing ATP
    d) Masking myosin binding sites
    Answer: b) Storing calcium ions