Free Locomotion And Movement (Monthly Quiz: 1) NEET Biology Questions & Answers with Detailed Explanation & Full Review

  1. Home
  2. NEET
  3. Quiz
  4. Biology
  5. Locomotion And Movement
  6. Quiz-1
Daily Updates & Posts Today's Quiz
Daily Updates & Posts Today's Quiz
Free Locomotion And Movement (Monthly Quiz: 1) Time:

Question-1

Intercoastal muscles are found attached with

(a)

(b)

(c)

(d)

Question-2

Cranium of man is made up of

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

The cranium is formed by 8 bones. (1 frontal bone,2 parietal, 2 temporal, 1 occipital, 1 sphenoid, 1 ethmoid).

Question-3

Which of the following statements about the striated muscles is false ?
  1. In the centre of each I-band is an elastic fibre (Z-line)which bisects it
  2. Thin filaments are firmly attached to the Z-line
  3. M-line is a fibrous membrane in the middle of A-bands
  4. A sarcomere comprises one full A-bands and 2 half I-bands.

(a)

(b)

(c)

(d)

Question-4

Skeletal system consists of

(a)

(b)

(c)

(d)

Question-5

Sliding filament theory can be best explained as

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

During muscle contraction, the laterally projecting heads (cross bridges) of the thick myosin myofilaments come in contact with the thin actin myofilaments and rotate on them. This pulls the thin myofilaments toward the middle of the sarcomere, past the thick myofilaments. The Z lines come closer together and the sarcomere becomes shorter. Length of the A band remains constant. Myofilaments (both actin and myosin) stay the same length. Free ends of actin myofilaments move closer to the centre of the sarcomere, bringing Z lines closer together. I bands shorten and H zone narrows. A similar action in all the sarcomeres results in shortening of the entire myofibril and thereby of the whole fibre and the whole muscle.

Question-6

Which one yields ATP required for muscle contraction?

(a)

(b)

(c)

(d)

Question-7

A deltoid ridge occurs in

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Humerus bone has V-shaped deltoid ridge. It is important point of muscle attachment.

Question-8

Select the correct statement with respect to locomotion in humans.

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Thoracic vertebrae are 12 in numbers. Joints between adjacent vertebrae are cartilaginous joints and the opposing surfaces are connected by fibrocartilage which allows very little movement. Osteoporosis is a disease characterised by low bone mass and loss of bone tissue that may lead to weak and fragile bones. Osteoporosis occurs when there is an imbalance between new bone formation and old bone resorption. Generalised osteoporosis is common in elderly people and in women following menopause. In osteoporosis, the osteoblastic (bone forming) activity in the bone usually is less than normal and consequently the rate of bone deposition is depressed. Estrogens inhibit osteoclastic (bone resorption) activity in the bones and therefore stimulate bone growth. After menopause, almost no estrogens are secreted by ovaries. This estrogen deficiency leads to increased osteoclastic activity in the bones, decreased bone matrix and decreased deposition of bone calcium and phosphate. In some women, this effect result in osteoporosis.

Question-9

Troponin

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Troponin is a globular protein complex involved in muscle contraction. It occurs with tropomyosin in the thin filaments of muscle tissue. It covers the active site of actin. Together with tropomyosin, troponin forms a regulatory protein complex controlling the interaction of actin and myosin and that when combined with calcium ions permits muscular contraction.

Question-10

Actin protein occurs in two forms

(a)

(b)

(c)

(d)

Question-11

The muscle band that remains unchanged during contraction and relaxation of the skeletal muscle is

(a)

(b)

(c)

(d)

Question-12

Hyoid bone is located

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Hyoid bone is a U-shaped bone seen below buccal cavity. It lies at the base of the mandible (approximately $C_{3}$), where it acts as a site of attachment for the anterior neck muscles.

Question-13

Given below are some events which occur during muscle contraction.
  1. ATP is hydrolyzed.
  2. Myosin heads bind to actin.
  3. Hemoglobin concentration in muscle fibers increases.
  4. Calcium concentration in the sarcomere increase.
  5. I bands shorten and H zones disappear.
Select the correct events which occur during muscle contraction.

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Events i, ii, iv and v only occurs during muscle contraction. Concentration of myoglobin, red coloured oxygen storing pigment, in muscle fibres increases.

Question-14

Select the correct matching of the type of the joint with the example in human skeletal system:
 Type of joint Example
(a)Cartilaginous jointbetween frontal and pariental
(b)Pivot joint fourth cervical between third and vertebrae
(c)Hinge joint between humerus and pectoral girdle
(d)Gliding joint between carpals

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

A gliding joint is a common type of synovial joint formed between bones that meet at flat or nearly flat articular surfaces. Gliding joints allow the bones to glide past one another in any direction along the plane of the joint - up and down, left and right, and diagonally. Many gliding joints are formed in the appendicular skeleton between the carpal bones of the wrist; between the carpals and the metacarpals of the palm; between the tarsal bones of the ankle; and between the tarsals and the metatarsals of the foot.

Question-15

The given figure represents the cross bridge cycle in skeletal muscle. What does the step B in the figure represents?

locomotion-and-movement-class-11-Chapter-20-neet-mcq-5-20-74-178

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Step A: Attachment of myosin head to actin forming cross bridge.

Step B: Release of phosphate. Myosin changes shape to pull actin.

Step C: Attachment of new ATP to myosin head. The cross bridge detaches.

Step D: Splitting of ATP into ADP and Pi. Myosin cocks into its high energy conformation.

Question-16

Knee joint and elbow joints are examples of

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Knee joint and elbow joints are examples of hinge joints.

Question-17

Contractile tissues have the following features.
  1. They are mesodermal in origin.
  2. They contain stretch receptors.
  3. Rhythmic contractions are seen in them.
  4. They do not fatigue during the life of the animal.
Which of the above are characteristics of sphincters?

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Sphincters is a ring of muscle surrounding and serving to guard or close an opening or tube like the anus or the openings of the stomach. These muscles do not fatigue during the life of an animal.

Question-18

Which of the following is an autoimmune disorder?

(a)

(b)

(c)

(d)

Question-19

The H-zone in the skeletal muscle fibre is due to

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Central part of thick filament, not overlapped by thin filaments is called the ‘H’ zone. ‘H’ zone is also called Hensen’s Line.

Question-20

Long uninucleate muscles are found in

(a)

(b)

(c)

(d)

Explanation:

Answer: (c)

Smooth muscles are long and uni-nucleated. They are found in urogenital tracts, digestive tract, lungs, iris, blood vessel etc.

Molecular Basis Of Inheritance

Quiz 32

Biotechnology Principles And Processes

Quiz 33

Biotechnology And Its Applications

Quiz 34

Organisms And Populations

Quiz 35

Ecosystem

Quiz 36

NEET Biology Quiz

Topic Wise Quizzes

NEET Biology MCQ

Topic Wise Exercise

NEET Biology

Recently Uploaded Posts
Trending & Popular Posts

Today Quiz

Animal Kingdom

This Week Quiz

Locomotion And Movement

This Month Quiz

Locomotion And Movement