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Locomotion and Movement

AIPMT 2006MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2006

The contractile protein of skeletal muscle involving ATPase activity is

  1. troponin
  2. tropomyosin
  3. myosin
  4. -actinin.

Answer

(3) myosin

Solution

As per NCERT, the globular head of meromyosin (myosin) is an active ATPase enzyme and has binding sites for ATP and active sites for actin.

Myosin hydrolyses ATP and uses the energy for cross-bridge formation and muscle contraction.

Troponin and tropomyosin are regulatory proteins of the thin filament.

Answer: (3)

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Ques. 2AIPMT 2005

An acromion process is characteristically found in the

  1. pelvic girdle of mammals
  2. pectoral girdle of mammals
  3. skull of frog
  4. sperm of mammals.
Ques. 3AIPMT 2005

Which of the following pairs is correctly matched?

  1. Hinge joint – Between vertebrae
  2. Gliding joint – Between zygapophyses of the successive vertebrae
  3. Cartilaginous joint – Skull bones
  4. Fibrous joint – Between phalanges
Ques. 4AIPMT 2002

What will happen if ligaments are torn?

  1. Bones will move freely at joint and no pain.
  2. Bone less movable at joint and pain.
  3. Bone will become unfixed.
  4. Bone will become fixed.
Ques. 5AIPMT 2001

Which statement is correct for muscle contraction?

  1. Length of H-zone decreases
  2. Length of A-band remains constant
  3. Length of I-band increases
  4. Length of two Z-line increases
Ques. 6AIPMT 2001

What is sarcomere?

  1. Part between two H-lines
  2. Part between two A-lines
  3. Part between two I-bands
  4. Part between two Z-lines
Ques. 7AIPMT 2000

Sternum is connected to ribs by

  1. bony matter
  2. white fibrous cartilage
  3. hyaline cartilage
  4. areolar tissue
Ques. 8AIPMT 2000

Bone related with skull is

  1. coracoid
  2. arytenoid
  3. pterygoid
  4. atlas
Ques. 9AIPMT 2000

What is the name of joint between ribs and sternum?

  1. Cartilaginous joint
  2. Angular joint
  3. Gliding joint
  4. Fibrous joint

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