Locomotion And Movement Test

Locomotion And Movement

This is Locomotion And Movement Test-01 for CBSE class 11 Biology.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Actin filaments are found in all eukaryotic cells but reportedly absent in :
  • A
    both A & C
  • B
    human sperms
  • C
    nematode sperms
    Correct
  • D
    fish sperms
2
Study of muscles is called :
  • A
    Musclogy
  • B
    myology
    Correct
  • C
    Sarcology
  • D
    Mycology
3
The correctorganisation of skeletal muscle is :
  • A
    fascia \( \to \) muscle cells \( \to \) myofibrils \( \to \) sarcomere
  • B
    muscle bundles \( \to \) muscle cells \( \to \) muscle fibres \( \to \) sarcomere
  • C
    muscle bundles \( \to \) myofibrils \( \to \) muscle cells \( \to \) sarcomere
  • D
    fascicles \( \to \) muscle fibres \( \to \) myofilaments \( \to \) sarcomere
    Correct
4
Discovery of actin is credited to :
  • A
    Pollard and Korn
  • B
    Halliburton
  • C
    John Kendren
  • D
    Straub
    Correct
5
Muscles are attached to bones via :
  • A
    none of these
  • B
    both A & B
  • C
    tendon
    Correct
  • D
    Ligament
6
A functional G-Actin molecule in its free state is bound to :
  • A
    mangnese ion and ATP
  • B
    none of these
  • C
    sodium ion and ATP
  • D
    magnesium ion and ATP
    Correct
7
A meromyosin molecule doesn’t contain :
  • A
    head
  • B
    tail
  • C
    trunk
    Correct
  • D
    arm
8
The property which doesn’t belong to muscle fibres is :
  • A
    elasticity
  • B
    Contractility
  • C
    conductivity
    Correct
  • D
    Excitability
9
Myoglobin is found to be : i. highly abundant in muscles of whales and seals . ii. exhibiting cooperative binding of oxygen. iii. allowing organisms to hold their breathe longer underwater.
  • A
    all statements are correct.
  • B
    onlyi) and ii) are correct.
  • C
    only ii) is correct.
  • D
    onlyi) and iii) are correct.
    Correct
10
Polymerisation of actin monomers involves ATP hydrolysis as shown in the following figure : [choose the correct one]
  • A
    Option A
  • B
    Option B
  • C
    Option C
  • D
    Option D
    Correct
11
Look at the following figure of myofibrils figure (1), (2), (3), (4) : showing ?
Question 11 figure 1
  • A
    (1) & (2) represent contracted state while (3) & (4) represent breaking of cross bridge
  • B
    (1) & (2) represent relaxed state while (3) & (4) represent cross bridge formation
    Correct
  • C
    (1) & (2) represent contracted state while (3) & (4) represent cross bridge formation
  • D
    (1) & (2) represent relaxed state while (3) & (4) represent breaking of cross bridge
12
Look at the following figure of movement of the thin filaments The label x, y, and z are respectively
Question 12 figure 1
  • A
    I band, A band, H zone
  • B
    H zone, I band, A band
    Correct
  • C
    I band, H zone, A band
  • D
    H zone, A band and I band
13
The correct result of ATPase activity that occurs during muscle contraction is :
  • A
    Option A
  • B
    Option B
    Correct
  • C
    Option C
  • D
    Option D
14
Read the following statements about muscle contraction in humans : i. chemical energy is converted into mechanical energy during muscle contraction and the chemical is a neurotransmitter. ii. a neurotransmitter acetylcholine at motor end plate converts electrical energy into mechanical energy. iii. in a contracted muscle, volume remains the same. iv. a contracted muscle becomes shorter and thicker.
  • A
    onlyi) and iv) are correct.
  • B
    only iv) is correct.
  • C
    only ii), iii) and iv) are correct.
  • D
    only i), iii) and iv) are correct.
    Correct
15
Which of the following statements is/are incorrect about sliding filament theory of muscle contraction?
  • A
    during contraction width of H zone decreases.
  • B
    during contraction width of I and A bands remain the same.
    Correct
  • C
    during contraction Z lines come closer to together.
  • D
    both A & B