NEET-XI-Biology

20: Locomotion and Movement

  • #5
    Write the difference between:
    (a) Actin and Myosin
    (b) Red and White muscles
    (c) Pectoral and Pelvic girdle
    (a) Actin and Myosin
    (b) Red and White muscles
    (c) Pectoral and Pelvic girdle
    (a) Actin and Myosin
    (b) Red and White muscles
    (c) Pectoral and Pelvic girdle
    Ans : null (a) Actin and Myosin




    Actin
    Myosin
    1 Actin is a thin contractile protein. 1 Myosin is a thick contractile protein.
    2. It is present in light bands and is called an isotropic band. 2 It is present in dark bands and is called an anisotropic band.
    (b) Red and White muscles







    Red muscle fibre
    White muscle fibre
    1 Red muscle fibres are thin and smaller in size. 1 White muscle fibres are thick and larger in size.
    2 They are red in colour as they contain large amounts of myoglobin. 2 They are white in colour as they contain small amounts of myoglobin
    3 They contain numerous mitochondria. 3 They contain less number of mitochondria.
    4 They carry out slow and sustained contractions for a long period. 4 They carry out fast work for short duration.
    5 They provide energy by aerobic respiration. 5 They provide energy by anaerobic respiration.
    (c) Pectoral and Pelvic girdle




    Pectoral girdle
    Pelvic girdle
    1 It is a skeletal support from where the forelimbs of vertebrates are attached. 1 It is a skeletal support form where the hind limbs of vertebrates are attached.
    2 It is composed of two

    Bones namely, clavicle or collar bones and scapula or shoulder bone.
    2 It is composed of three bones, upper ileum, inner pubic, and ischium.
    (a) Actin and Myosin




    Actin
    Myosin
    1 Actin is a thin contractile protein. 1 Myosin is a thick contractile protein.
    2. It is present in light bands and is called an isotropic band. 2 It is present in dark bands and is called an anisotropic band.
    (b) Red and White muscles







    Red muscle fibre
    White muscle fibre
    1 Red muscle fibres are thin and smaller in size. 1 White muscle fibres are thick and larger in size.
    2 They are red in colour as they contain large amounts of myoglobin. 2 They are white in colour as they contain small amounts of myoglobin
    3 They contain numerous mitochondria. 3 They contain less number of mitochondria.
    4 They carry out slow and sustained contractions for a long period. 4 They carry out fast work for short duration.
    5 They provide energy by aerobic respiration. 5 They provide energy by anaerobic respiration.
    (c) Pectoral and Pelvic girdle




    Pectoral girdle
    Pelvic girdle
    1 It is a skeletal support from where the forelimbs of vertebrates are attached. 1 It is a skeletal support form where the hind limbs of vertebrates are attached.
    2 It is composed of two

    Bones namely, clavicle or collar bones and scapula or shoulder bone.
    2 It is composed of three bones, upper ileum, inner pubic, and ischium.
    (a) Actin and Myosin




    Actin
    Myosin
    1 Actin is a thin contractile protein. 1 Myosin is a thick contractile protein.
    2. It is present in light bands and is called an isotropic band. 2 It is present in dark bands and is called an anisotropic band.
    (b) Red and White muscles







    Red muscle fibre
    White muscle fibre
    1 Red muscle fibres are thin and smaller in size. 1 White muscle fibres are thick and larger in size.
    2 They are red in colour as they contain large amounts of myoglobin. 2 They are white in colour as they contain small amounts of myoglobin
    3 They contain numerous mitochondria. 3 They contain less number of mitochondria.
    4 They carry out slow and sustained contractions for a long period. 4 They carry out fast work for short duration.
    5 They provide energy by aerobic respiration. 5 They provide energy by anaerobic respiration.
    (c) Pectoral and Pelvic girdle




    Pectoral girdle
    Pelvic girdle
    1 It is a skeletal support from where the forelimbs of vertebrates are attached. 1 It is a skeletal support form where the hind limbs of vertebrates are attached.
    2 It is composed of two

    Bones namely, clavicle or collar bones and scapula or shoulder bone.
    2 It is composed of three bones, upper ileum, inner pubic, and ischium.
  • #5-a
    Actin and Myosin
    Ans : Actin and Myosin




    Actin
    Myosin
    1 Actin is a thin contractile protein. 1 Myosin is a thick contractile protein.
    2. It is present in light bands and is called an isotropic band. 2 It is present in dark bands and is called an anisotropic band.
  • #5-b
    Red and White muscles
    Ans : Red and White muscles







    Red muscle fibre
    White muscle fibre
    1 Red muscle fibres are thin and smaller in size. 1 White muscle fibres are thick and larger in size.
    2 They are red in colour as they contain large amounts of myoglobin. 2 They are white in colour as they contain small amounts of myoglobin
    3 They contain numerous mitochondria. 3 They contain less number of mitochondria.
    4 They carry out slow and sustained contractions for a long period. 4 They carry out fast work for short duration.
    5 They provide energy by aerobic respiration. 5 They provide energy by anaerobic respiration.
  • #5-c
    Pectoral and Pelvic girdle
    Ans : Pectoral and Pelvic girdle




    Pectoral girdle
    Pelvic girdle
    1 It is a skeletal support from where the forelimbs of vertebrates are attached. 1 It is a skeletal support form where the hind limbs of vertebrates are attached.
    2 It is composed of two

    Bones namely, clavicle or collar bones and scapula or shoulder bone.
    2 It is composed of three bones, upper ileum, inner pubic, and ischium.