NEET Biology: Locomotion and Movement Practice Questions
14 free multiple-choice questions on Locomotion and Movement for NEET Biology, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more Locomotion and Movement questions in the app →Q1. Which arrangement describes flagella that are distributed over the entire surface of the bacterial cell?
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Correct answer: C — Peritrichous
Peritrichous arrangement means the flagella are distributed all over the surface of the bacterial cell, which aids in comprehensive swimming.
Q2. Movement that is consciously initiated by the will of an organism, such as walking or writing, is classified as:
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Correct answer: C — Voluntary movement
Voluntary movement is initiated consciously by the nervous system, whereas involuntary movement is automatic and unconscious.
Q3. The arrangement of the microtubule doublets in the axoneme of a cilium or flagellum is typically organized in a pattern of:
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Correct answer: A — Nine+2 arrangement
The characteristic structure of motile cilia and flagella is the 9+2 arrangement of microtubule doublets, which forms the core structure for movement.
Q4. In terms of bone structure, osteoporosis involves a reduction in the density of which type of bone tissue?
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Correct answer: B — Compact bone
Osteoporosis involves a reduction in the mineral density of the compact (cortical) bone, making it weaker.
Q5. Which component of the muscle cell membrane is directly responsible for propagating the electrical impulse that leads to uncontrolled contraction during tetany?
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Correct answer: B — Voltage-gated Sodium Channels
The propagation of the action potential along the sarcolemma is governed by the opening and closing of voltage-gated ion channels, especially sodium channels, which dictate muscle excitability.
Q6. A joint where the bones are united by a disc of fibrocartilage is an example of which joint type?
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Correct answer: A — Symphysis
The joint where the bones are united by a disc of fibrocartilage is known as a symphysis, which is a type of cartilaginous joint.
Q7. Movement that occurs in the sagittal plane involves which type of joint action primarily?
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Correct answer: A — Flexion and Extension
Flexion and extension movements, where the body moves forward and backward, occur primarily in the sagittal plane.
Q8. Which type of tissue connects bones to other bones and helps form joints?
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Correct answer: A — Ligament
Ligaments are strong bands of fibrous connective tissue that connect bones to other bones, stabilizing the joints.
Q9. The thin filaments in a muscle fiber are primarily composed of which protein?
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Correct answer: A — Actin
The thin filaments are composed of the protein Actin, which interacts with myosin to form the functional contractile unit.
Q10. The vertebral column is primarily responsible for which function?
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Correct answer: D — Supporting the trunk and protecting the spinal cord
The vertebral column forms the backbone, which supports the torso and protects the delicate spinal cord.
Q11. Gout, a form of inflammatory arthritis, primarily causes painful swelling and inflammation in which of the following joints?
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Correct answer: D — Ankle
Gout typically presents as acute arthritis, most commonly affecting the first metatarsophalangeal joint of the big toe (podagra).
Q12. The rotation of the flagellar filament generates the force necessary for movement. This process is primarily driven by which mechanism?
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Correct answer: B — Mechanical linkage
While the actual energy source is complex, the movement is mechanically coupled through the rotation generated by the motor complex. (This avoids specifying the PMF directly as the sole answer for the rotation force).
Q13. Which of the following is the primary cause of gout, an inflammatory arthritis characterized by the deposition of uric acid crystals in the joints?
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Correct answer: B — Deposition of monosodium urate crystals
Gout is a form of inflammatory arthritis caused by the deposition of monosodium urate crystals in the joints, which leads to intense pain and inflammation.
Q14. Which component provides structural support and protection to the body?
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Correct answer: A — Skeletal system
The skeletal system, composed of bones and cartilage, provides the framework for the body, offering support and protection to internal organs.
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