Self Studies
Self Studies
Self Studies
Self Studies
Selfstudy
Selfstudy

Locomotion and Movement Test - 9

Result Self Studies

Locomotion and Movement Test - 9
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Muscular and nervous excitability is lowered by which of the following?
    Solution
    • High extracellular K+  leads to depolarization and ensuing inactivation of voltage-gated Na+ channels and loss of excitability in isolated muscles, exercise-induced loss of K+ is likely to reduce muscle excitability and thereby contribute to muscle fatigue. Hence, Muscular and nervous excitability is lowered by K.
    So, the correct answer is 'K'.


  • Question 2
    1 / -0
    Movement of whole animal from one place to another place is called as
    Solution
    • Locomotion is when the movement of a part of the body leads to change in the position and location of the organism. 
    •  In multicellular animals, these movements include walking, running, jumping, crawling, climbing, swimming, flying, galloping, slithering, and so on. Hence, the Movement of the whole animal from one place to another place is called Locomotion. 
      • So, the correct answer is 'Locomotion'.
  • Question 3
    1 / -0
    The muscles of urinary bladder can be categorized as
    Solution
    • The detrusor muscle is a layer of the urinary bladder wall made of smooth muscle fibres arranged in a spiral, longitudinal, and circular bundles. 
    • The detrusor muscle remains relaxed to allow the bladder to store urine, and contracts during urination to release urine. Hence, The muscles of the urinary bladder can be categorized as Smooth muscle.
    So, the correct answer is 'Smooth muscle'.
  • Question 4
    1 / -0
    ATPase activity in muscle fibre lies with
    Solution
    • The myofibril is composed of two types of filaments. They are thick filament(Myosin) and Thin filament(Actin).
    • Increase in Ca++ level leads to the binding of calcium with a subunit of troponin i.e troponin-C on actin filaments and thereby remove the masking of active sites for myosin. Utilizing the energy from ATP hydrolysis, the myosin head now binds to the exposed active sites on actin to form a cross bridge.
    • Each myosin (thick) filament is also a polymerized protein. Many monomeric proteins called Meromyosins constitute one thick filament. Each meromyosin has the globular head which is an active ATPase enzyme and has binding sites for ATP and active sites for actin. Hence ATPase activity in muscle fibre lies with Head of heavy meromyosin.
    • So, the correct answer is 'Head of heavy meromyosin'.
  • Question 5
    1 / -0
    Collar bone is known as
    Solution
    • Each pectoral girdle is formed of two halves. Each half of pectoral girdle consists of a clavicle and a scapula.
    • The clavicle is the only long bone in the body that lies horizontally.
    • Each clavicle is a long slender bone with two curvatures. This bone is commonly called the collarbone.
    • Hence collar bone is known as the clavicle.
    • So, the correct answer is 'Clavicle'.
  • Question 6
    1 / -0
    In resting stage, binding sites for myosin on actin filaments are masked by
    Solution
    • Skeletal muscle fiber is made up of two types of filaments. They are thick filament (myosin) and thin filament (actin). Contraction of a muscle fiber takes place by the sliding of the thin filaments over the thick filaments.
    • Myosin (thick) filament is also a polymerized protein. Many monomeric proteins called meromyosins constitute one thick filament. 
    • Each actin (thin) filament is made of two ‘F’ (filamentous) actins helically wound to each other. Each ‘F’ actin is a polymer of monomeric ‘G’ (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ‘F’ actins throughout its length
    •  In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
    • So, the correct answer is 'Troponin'.
  • Question 7
    1 / -0
    Calcium ions bring about muscle contraction through
    Solution
    • The muscle contraction cycle is triggered by calcium ions binding to the protein complex troponin, exposing the active-binding sites on the actin. 
    • ATP can then attach to myosin, which allows the cross-bridge cycle to start again; further muscle contraction can occur. 
    • Cardiac myosin activators stimulate myosin ATPase, thereby increasing force generation. Hence, Calcium ions bring about muscle contraction
    • through Activation of myosin ATP-ase.
     So, the correct answer is 'Activation of myosin ATP-ase'.
  • Question 8
    1 / -0
    Thick filaments in muscles are polymerised proteins of
    Solution
    • Myofibrils are composed of two types of filaments i.e thin filament (actin) and thick filament (myosin).
    • Actin filaments are thinner as compared to the myosin filaments, hence are commonly called thin and thick filaments respectively
    • Each myosin (thick) filament is a polymerized protein. Many monomeric proteins called meromyosins constitute one thick filament (Myosin).
    • Hence thick filaments in muscles are polymerized proteins of meromyosin.
    • So, the correct answer is 'Meromyosin'.
  • Question 9
    1 / -0
    Sprain involves
    Solution
    A sprain is a stretching or tearing of ligaments which are the tough bands of fibrous tissue that connect two bones together in the joints. The most common causes of sprains are falling, twisting etc. These types of injuries may cause the joint to move out of its normal range of movement that causes the tearing or stretching of the ligament. So, the correct answer is 'Overstretching of ligament'.
  • Question 10
    1 / -0
    Actin binding sites are located over
    Solution
    • The myofibril is composed of two types of filaments. They are thick filament(Myosin) and Thin filament(Actin).
    • Increase in Ca++ level leads to the binding of calcium with a subunit of troponin i.e troponin-C on actin filaments and thereby remove the masking of active sites for myosin. Utilizing the energy from ATP hydrolysis, the myosin head now binds to the exposed active sites on actin to form a cross bridge.
    • Each myosin (thick) filament is also a polymerized protein. Many monomeric proteins called Meromyosins constitute one thick filament. Each meromyosin has the globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
    • Hence actin binding sites are located over meromyosin'.
    • So, the correct answer is 'Meromyosin'.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now