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Locomotion And Movement Mock Tests

14 questions available

Locomotion And Movement Mock Test 1

Questions: 14

नमूना प्रश्न

Class 11 Biology
Which of the following is the correct match of a disorder with its cause?
A Myasthenia gravis — autoimmune destruction of the myelin sheath
B Osteoporosis — decreased blood calcium levels only
C Osteoporosis — loss of bone mass due to hormonal imbalance (especially oestrogen deficiency)
D Amyotrophic lateral sclerosis — inflammation of the joints
Class 11 Biology
Which of the following is the correct sequence of events in muscle contraction according to the sliding filament theory?
A Ca²⁺ release → cross-bridge formation → power stroke → detachment → reset
B Power stroke → Ca²⁺ release → cross-bridge formation → detachment → reset
C Cross-bridge formation → Ca²⁺ release → power stroke → reset → detachment
D Ca²⁺ release → power stroke → cross-bridge formation → reset → detachment
Class 11 Biology
Osteoporosis is a disorder characterized by which of the following changes in bone structure?
A Increased calcium deposition in bones
B Decrease in bone mass and increased fragility
C Destruction of articular cartilage
D Excessive bone formation at joints
Class 11 Biology
Which of the following is a disorder of the muscular system caused by autoimmune attack on the neuromuscular junction?
A Tetany
B Myasthenia gravis
C Muscular dystrophy
D Osteoporosis
Class 11 Biology
Which of the following joints is an example of a synovial joint found between the humerus and the scapula in the human shoulder?
A Suture joint
B Hinge joint
C Saddle joint
D Ball and socket joint
Class 11 Biology
Which type of joint in the human body allows movement in only one plane (uniaxial movement), similar to the motion of a door hinge?
A Saddle joint
B Hinge joint
C Ball and socket joint
D Pivot joint
Class 11 Biology
Muscle contraction follows the sliding filament theory. According to this theory, which of the following changes occurs in the sarcomere during muscle contraction?
A The I band widens and the A band shortens
B The I band narrows, the H zone disappears, but the A band remains constant in length
C Both the I band and A band shorten proportionally
D The Z lines move further apart and the sarcomere lengthens
Class 11 Biology
Muscle contraction is initiated by the release of which neurotransmitter at the neuromuscular junction?
A Acetylcholine
B Adrenaline
C Dopamine
D Serotonin

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