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NEET Exam  >  NEET Test  >  Topic-wise MCQ Tests  >  Test: Muscle (NCERT) - NEET MCQ

Muscle (NCERT) - Free MCQ Practice Test with solutions, NEET


MCQ Practice Test & Solutions: Test: Muscle (NCERT) (10 Questions)

You can prepare effectively for NEET Topic-wise MCQ Tests for NEET with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Muscle (NCERT)". These 10 questions have been designed by the experts with the latest curriculum of NEET 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 10 minutes
  • - Number of Questions: 10

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Test: Muscle (NCERT) - Question 1
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The functional unit of contractile system in a striated muscle is

Detailed Solution: Question 1

Sarcomere is the functional unit of myofibril. It contains two types of protein filaments called actin and myosin. These filaments slide upon each other to bring about the contraction of the muscles.

Topic in NCERT: Sarcomere

Line in NCERT: "The portion of the myofibril between two successive 'Z' lines is considered as the functional unit of contraction and is called a sarcomere."

Test: Muscle (NCERT) - Question 2
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What is sarcomere?

Detailed Solution: Question 2

Sarcomere is a part of myofibril between two successive Z-lines, which consists of two I-band halves, and an A-band between them. It is functional unit of myofibril.

Topic in NCERT: Sarcomere

Line in NCERT: "The portion of the myofibril between two successive 'Z' lines is considered as the functional unit of contraction and is called a sarcomere."

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Test: Muscle (NCERT) - Question 3
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Dark bands are

Detailed Solution: Question 3

A myofibril has dark and light bands. The dark bands are called A bands (Anisotropic bands). Light bands are called I bands (isotropic bands).

Topic in NCERT: Structure of Myofibrils

Line in NCERT: "The light bands contain actin and is called I-band or Isotropic band, whereas the dark band called 'A' or Anisotropic band contains myosin."

Test: Muscle (NCERT) - Question 4
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Read the statements regarding muscle proteins.
(i) Actin is a thin filament and is made up of two F-actins,
(ii) The complex protein, tropomyosin is distributed at regular intervals on the troponin
(iii) Myosin is a thick filament which is also a polymerized protein
(iv) The globular head of meromyosin consists of light meromyosin (LMM)

Detailed Solution: Question 4

Each actin (thin) filament is made of two 'F' (filamentous) actin helically wound to each other. Each F actin is a polymer of monomeric 'G' (globular) actins. Myosin (thick) filament is a polymerised protein. Many monomeric proteins called meromyosins constitute one thick filament. Tropomyosin is a fibrous molecule that attaches to F actin in the groove between its filament. The globular head of meromyosin consists of heavy meromyosin.

Topic in NCERT: Structure of Contractile Proteins

Line in NCERT: "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. A complex protein Troponin is distributed at regular intervals on the tropomyosin. Each myosin (thick) filament is also a polymerised protein."

Test: Muscle (NCERT) - Question 5
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Actin binding sites are located on

Detailed Solution: Question 5

Heavy meromyosin consists of two globular sub-frament (S-1) and one rod shaped fibre sub-fragment (S-2). Each S-1 segment contains an ATPase site and a binding site for actin.

Topic in NCERT: Structure of Contractile Proteins

Line in NCERT: "Each actin (thin) filament is made of two 'F' (filamentous) actins helically wound to each other."

Test: Muscle (NCERT) - Question 6
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The type of muscle fibre present in the wall of alimentary canal is

Detailed Solution: Question 6

The type of muscle fibre present in the wall of alimentary canal is smooth muscle fibre. Smooth muscle fibres are non-striated and involuntary.

Topic in NCERT: MUSCLE

Line in NCERT: "Visceral muscles, present in the inner walls of visceral organs are nonstriated and involuntary."

Test: Muscle (NCERT) - Question 7
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Which of the following statements is incorrect?

Detailed Solution: Question 7

The cytoplasm of striated muscle is called sarcoplasm.

Test: Muscle (NCERT) - Question 8
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Which of the following statements about the striated muscles is incorrect?

Detailed Solution: Question 8

Line in NCERT: . In the centre of each ‘I’ band is an elastic fibre called ‘Z’ line which bisects it. The thin filaments are firmly attached to the ‘Z’ line. The thick filaments in the ‘A’ band are also held together in the middle of this band by a thin fibrous membrane called ‘M’ line. The ‘A’ and ‘I’ bands are arranged alternately throughout the length of the myofibrils. The portion of the myofibril between two successive ‘Z’ lines is considered as the functional unit of contraction and is called a sarcomere.

Topic in NCERT: Structure of Contractile Proteins

Line in NCERT: "In the centre of each 'I' band is an elastic fibre called 'Z' line which bisects it. The thin filaments are firmly attached to the 'Z' line. The thick filaments in the 'A' band are also held together in the middle of this band by a thin fibrous membrane called 'M' line."

Test: Muscle (NCERT) - Question 9
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Which of the following statements about the molecular arrangement of actin and myosin in myofibrils is/are incorrect?
(i) Each actin (thin filament) is made of 2F (filamentous) actins.
(ii) F-actin is the polymer of G (globular) actin.
(iii) 2F-actins are twisted into a helix.
(iv) Two strands of tropomyosin (protein) lie in the grooves of F-actin.
(v) Troponin molecules (complex proteins) are distributed at regular intervals on the tropomyosin.
(vi) Troponin forms the head of the myosin molecule.
(vii) The myosin is a polymerised protein.

Detailed Solution: Question 9

A complex troponin protein of three globular peptides (Troponin T - Binding to tropomyosin as well as to the other two troponin components; Troponin I - inhibiting the F-actin - myosin interaction, also binding to other components of troponin; Troponin C - calcium binding polypeptide) is distributed at regular intervals on the tropomyosin. In the resting stage of muscle fibre, a sub - unit of troponin masks the active sites for myosin on the actin filaments.

Topic in NCERT: Structure of Contractile Proteins

Line in NCERT: "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. A complex protein Troponin is distributed at regular intervals on the tropomyosin."

Test: Muscle (NCERT) - Question 10
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Read the following statements carefully and select the correct ones.
(i) Cardiac fibres are branched with one or more nuclei.
(ii) Smooth muscles are unbranched and cylindrical.
(iii) Skeletal muscles can be branched or unbranched.
(iv) Smooth muscles are non-striated.

Detailed Solution: Question 10

Smooth muscles are non-striated, unbranched and spindle shaped. Skeletal muscles are unbranched. Cardiac muscles fibres are uni-nucleated.

Topic in NCERT: Visceral Muscles

Line in NCERT: "Visceral muscles do not exhibit any striation and are smooth in appearance. Hence, they are called smooth muscles (nonstriated muscle)."

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About this NEET Practice Test

This test contains 10 MCQs on Muscle (NCERT) with detailed solutions for each question. It is part of the Topic-wise MCQ Tests for NEET course on EduRev, designed to align with the current NEET syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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