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NEET UG Locomotion and Movement — practice questions

Explore 90 free Locomotion and Movement questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Locomotion and Movement questions and exercises with answers

Showing questions 1–30 of 90.

The three types of muscle in human body are:Read the answer and worked solution →Functional unit of skeletal muscle is the:Read the answer and worked solution →Thick filaments in skeletal muscle are made of:Read the answer and worked solution →Calcium for muscle contraction is released from:Read the answer and worked solution →Knee joint type:Read the answer and worked solution →The smallest bones of human body are in the:Read the answer and worked solution →Adult human skeleton has approximately how many bones?Read the answer and worked solution →Tendons connect:Read the answer and worked solution →RIGOR MORTIS (stiffness after death) occurs because:Read the answer and worked solution →An adult human skeleton has approximately how many bones?Read the answer and worked solution →The pectoral girdle in humans consists of:Read the answer and worked solution →The KNEE joint is an example of which type of synovial joint?Read the answer and worked solution →SLOW-TWITCH (Type I, red) muscle fibres are characterised by:Read the answer and worked solution →NEET · Biology · Joint Type ↔ ExampleRead the answer and worked solution →NEET · Biology · Sarcomere Band ↔ ContentsRead the answer and worked solution →A white blood cell crawls towards a germ using pseudopodia. This movement is:Read the answer and worked solution →Dust you breathe in is swept out of the trachea by the beating of:Read the answer and worked solution →A sperm swims using its:Read the answer and worked solution →Muscles attached to bones look striped under a microscope, so they are called:Read the answer and worked solution →Muscles in the wall of the gut push food along without your control. They are:Read the answer and worked solution →Heart muscle is striated yet the nervous system does not control it directly, so it is:Read the answer and worked solution →The plasma membrane of a muscle fibre is called the:Read the answer and worked solution →In a resting muscle, which protein subunit hides the myosin-binding sites on actin?Read the answer and worked solution →The globular head of myosin works as an enzyme that splits:Read the answer and worked solution →After a hard run your muscles ache because they built up:Read the answer and worked solution →The red oxygen-storing pigment inside muscle is:Read the answer and worked solution →Bone matrix is very hard because of:Read the answer and worked solution →A U-shaped bone at the base of the mouth cavity, counted with the skull, is the:Read the answer and worked solution →The first vertebra, which meets the skull's occipital condyles, is the:Read the answer and worked solution →The last two pairs of ribs are not attached in front, so they are called:Read the answer and worked solution →

Worked practice questions

The three types of muscle in human body are:

  1. Skeletal only
  2. Skeletal (striated), smooth (visceral), and cardiac
  3. Random
  4. Just smooth
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Correct answer: B. Skeletal (striated), smooth (visceral), and cardiac

**Three muscle types:** (1) Skeletal — striated, voluntary, attaches to bones. (2) Smooth — non-striated, involuntary, in gut/blood vessels. (3) Cardiac — striated, involuntary, only in heart, has intercalated discs.

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Functional unit of skeletal muscle is the:

  1. ATP
  2. Cell
  3. Myosin
  4. Sarcomere (segment between two Z-discs)
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Correct answer: D. Sarcomere (segment between two Z-discs)

**Sarcomere:** contractile unit. Spans Z-line to Z-line. Contains thin filaments (actin) anchored to Z, thick filaments (myosin) in center (M-line). **Bands:** A (thick filament length, dark), I (thin only, light), H (thick only, in middle). Shortens during contraction.

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Thick filaments in skeletal muscle are made of:

  1. Collagen
  2. Myosin
  3. Actin
  4. Tropomyosin
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Correct answer: B. Myosin

**Thick filaments:** myosin II. **Each thick filament:** ~300 myosin molecules bundled. Each myosin has 2 heavy chains (with 2 heads and a coiled-coil tail) + 4 light chains. Heads form cross-bridges with actin, hydrolyze ATP, generate force. **Thin filaments:** actin (helical filament of G-actin monomers) + tropomyosin + troponin.

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