Free Support and Movement MCQs with Answers
738 Support and Movement MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Support and movement covers the axial and appendicular skeleton, bone structure, joints and the arrangement of skeletal muscles. Muscle contraction is explained through actin, myosin, sliding filaments, calcium ions and ATP, while arthritis is distinguished as a disorder of joints rather than a normal part of movement.
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- A. 70%
- B. 20%
- C. 99%
- D. 60%
Explanation: Bone cells are composed of approximately 20% water, which is essential for facilitating cellular functions and maintaining the hydration…
Correct answer: 20%- A. Humerus
- B. Ulna
- C. Femur
- D. Radius
Explanation: The femur extends from the hip joint to the knee joint, forming the upper leg. It connects the pelvis to the tibia (shinbone).
Correct answer: Femur- A. Osteoblasts
- B. Osteocytes
- C. Osteoclasts
- D. Osteons
Explanation: Osteoblasts are cells responsible for bone formation. They synthesize and secrete the bone matrix, which is primarily composed of collagen…
Correct answer: Osteoblasts- A. Ball and socket
- B. Pivot
- C. Hinge
- D. Fibrous
Explanation: The joint in the neck that allows the head to move back and forth is an example of a pivot joint.This option is not correct.
Correct answer: Pivot- A. Hinge Joints
- B. Fibrous Joints
- C. Ball and Socket Joints
- D. Cartilaginous Joints
Explanation: Explanation:The joints that allow movements in several directions are called ball and socket joints.
Correct answer: Ball and Socket Joints- A. Hinge joint
- B. Ball and Socket joint
- C. Cartiligious joint
- D. Fibrous joint
Explanation: Ball and socket joint allows movement in all directions as it enables movement around an indefinite number of axes.
Correct answer: Ball and Socket joint- A. Joints
- B. Cartilages
- C. Fibrous capsules
- D. Ligaments
Explanation: The correct answer is Ligaments. Ligaments are fibrous connective tissues that connect bones to other bones, providing joint stability and…
Correct answer: Ligaments- A. Ball and Socket Joint
- B. Hinge Joint
- C. Fibrous Joint
- D. Cartilaginous Joints
Explanation: The correct answer is the 'Ball and Socket Joint.' Both the hip and shoulder joints exemplify this type of synovial joint, characterized…
Correct answer: Ball and Socket Joint- A. Hip and shoulder joints
- B. Hip and knee joints
- C. Shoulder and knee joints
- D. Hip and elbow joints
Explanation: The ball and socket joint, also called the spheroidal joint, is a joint in which the ball-like rounded surface of a bone moves within a…
Correct answer: Hip and shoulder joints- A. Humerus and radio-ulna
- B. Femur and pectoral girdle
- C. Femur and acetabulum
- D. Humerus and pectoral girdle
Explanation: A hinge joint is a type of synovial joint that allows movement in only one plane, like the opening and closing of a door.
Correct answer: Humerus and radio-ulna- A. Tetany.
- B. Muscle fatigue.
- C. Cramp.
- D. Sciatica.
Explanation: Tetany is the disease caused by low calcium in the blood
Correct answer: Tetany.- A. I-band shortens
- B. Myosin filaments shorten
- C. Actin filaments shorten
- D. Z-line disappears
Explanation: Option [A] During muscle contraction the following things happen:I band shortensZ lines come closerH zone disappearsHENCE option [A] is…
Correct answer: I-band shortens- A. Sarcolemma
- B. Sarcoplasm
- C. Sarcomere
- D. Muscle fibre
Explanation: The region lying between two Z-bands is called a Sarcomere. Sarcomeres are the functional units of muscle contraction and are composed of…
Correct answer: Sarcomere- A. I-bands shorten
- B. H-zone becomes more visible
- C. Z-lines move further apart
- D. A-bands shorten
Explanation: According to the sliding filament theory, muscle contraction involves the sliding of thin actin filaments over thick myosin filaments…
Correct answer: I-bands shorten- A. I-band shortens only
- B. A-band shortens and Z-lines move apart
- C. I-band shortens and Z-lines come close to each other
- D. Actin filament contracts
Explanation: The I- band is the region near the Z - disc where we only have the actin filament.
Correct answer: I-band shortens and Z-lines come close to each other- A. Cross bridge formation
- B. Cross bridge breaking
- C. Dragging filaments
- D. Shortening of filaments
Explanation: ATP is needed for breaking the bridge between the myosin and the actin.
Correct answer: Cross bridge breaking- A. Extreme fatigue
- B. Muscle contraction
- C. Paralysis
- D. Convulsion
Explanation: Extreme fatigue, or severe tiredness, is an overwhelming sense of exhaustion that isn't relieved by rest.
Correct answer: Extreme fatigue- A. Actin
- B. Myosin
- C. Tropomyosin
- D. Troponin
Explanation: The thick muscle filament is primarily composed of myosin proteins. In muscle fibers, thick filaments work together with thin filaments…
Correct answer: Myosin- A. Two I bands
- B. Two A bands
- C. Two M lines
- D. Two Z lines
Explanation: A sarcomere is the basic structural and functional unit of a muscle fiber, specifically within striated muscle such as skeletal and…
Correct answer: Two Z lines- A. Sarcomere
- B. Sarcolemma
- C. Twitch fibre
- D. Capsule
Explanation: Each muscle fiber is surrounded by the sarcolemma, which also contains the cytoplasm of the cell.
Correct answer: Sarcolemma