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Locomotion and Movement Test - 7

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Locomotion and Movement Test - 7
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  • Question 1
    1 / -0
    Myosin head separates from actin when?
    Solution
    • The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement.
    • According to the sliding filament theory, the myosin (thick) filaments of muscle fibres slide past the actin (thin) filaments during muscle contraction, while the two groups of filaments remain at a relatively constant length. 
    •  Myosin has another binding site for ATP at which enzymatic activity hydrolyzes ATP to ADP, releasing an inorganic phosphate molecule and energy. 
    • ATP binding causes myosin to release action, allowing actin and myosin to detach from each other.
    • Hence, Myosin head separates from actin when ATP attached to myosin head. 
    • So, the correct answer is 'When ATP attached to myosin head'.
  • Question 2
    1 / -0
    Which one of the following is a sesamoid bone?
    Solution
    Correct Option: B
    Explanation:
    • Sesamoid bones are bones that are small and rounded masses.
    • Sesamoid bone is a bone embedded within a tendon or a muscle. 
    • These are generally present in joints. 
    • It is embedded with tendons.
    • The kneecap or patella is a sesamoid bone.
    • Hence, out of the given options the Patella is a sesamoid bone.
  • Question 3
    1 / -0
    Skeletal muscles appear striated due to presence of two characteristic proteins in alternating dark and light bands. Which of the following is a correct match of the protein with its light refractive property and colour?
    Solution
    Each actin (thin) filament is a polymerised protein made up of two 'F' (fibrous) actin strands helically wound to each other. Each "F" actin is a polymer of monomeric "G" (globular) actins. It is light in colour and shows isotropic property.
  • Question 4
    1 / -0
    A cricket player is fast chasing a ball in the field. Which one of the following groups of bones are directly contributing in this movement?
    Solution
    In a fast chasing cricketer, foot and leg bones contribute directly in this movement. Therefore Tarsals, femur, metatarsals and tibia are directly involved in this movement.
    The first option is incorrect as it includes one bone, Malleus, which is present in middle ear. 
    Second option is incorrect as it includes bones, Ulna which is the bone of lower arm, patella which is kneecap etc.
    Third option is also incorrect as it includes bone, sternum which is the chest bone which is not directly related with running. 
    Hence option D is correct.
  • Question 5
    1 / -0
    Human body exhibits type of movement is
    Solution
    Movement is a characteristic feature of living organisms. The different types of movement exhibited by cells of the human body are: 
    • Amoeboid movement: Leucocytes present in the blood show amoeboid movement. 
    • Ciliary movement: Reproductive cells such as sperms and ova show ciliary movement.
    •  Muscular movements:  Muscle tissue found inside of the heart, digestive organs, and blood vessels serve to move substances throughout the body. Hence, The cells of the human body exhibits type of movement are Amoeboid, Ciliary and Muscular.
    So, the correct answer is 'All of the above'.
  • Question 6
    1 / -0
    The purpose of locomotion is to search
    Solution
    • Animals move for a variety of reasons, such as to find food, a mate, a suitable microhabitat, or to escape predators.
    •  For many animals, the ability to move is essential for survival and, as a result, natural selection has shaped the locomotion methods and mechanisms used by moving organisms. Hence, The purpose of locomotion is to search Food, Shelter and Mate. So,the correct answer is 'All of the above'.
  • Question 7
    1 / -0

    The ability to move from one place to another is called

    Solution
    • Locomotion is when the movement of a part of the body leads to a change in the position and location of the organism. 
    • The act of changing place or position by the entire body or by one or more of its parts is called movement.
    • In multicellular animals, these movements include walking, running, jumping, crawling, climbing, swimming, flying, galloping, slithering, and so on. 
    • Hence, the ability to move from one place to another is called locomotion.

    So, the correct answer is 'Locomotion'.
  • Question 8
    1 / -0
    Ciliary muscles are found in

  • Question 9
    1 / -0
    Which type of joint is characterised by the presence of a
    fluid filled cavity and plays a significant role in locomotion

  • Question 10
    1 / -0
    patella is associated with

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