NEET Exam  >  NEET Tests  >  Biology Class 11  >  Test: Muscle (NCERT) - NEET MCQ

Test: Muscle (NCERT) - NEET MCQ


Test Description

10 Questions MCQ Test Biology Class 11 - Test: Muscle (NCERT)

Test: Muscle (NCERT) for NEET 2024 is part of Biology Class 11 preparation. The Test: Muscle (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Muscle (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Muscle (NCERT) below.
Solutions of Test: Muscle (NCERT) questions in English are available as part of our Biology Class 11 for NEET & Test: Muscle (NCERT) solutions in Hindi for Biology Class 11 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Muscle (NCERT) | 10 questions in 10 minutes | Mock test for NEET preparation | Free important questions MCQ to study Biology Class 11 for NEET Exam | Download free PDF with solutions
Test: Muscle (NCERT) - Question 1

The functional unit of contractile system in a striated muscle is

Detailed Solution for Test: Muscle (NCERT) - 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.

Test: Muscle (NCERT) - Question 2

What is sarcomere?

Detailed Solution for Test: Muscle (NCERT) - 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.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Muscle (NCERT) - Question 3

Dark bands are

Detailed Solution for Test: Muscle (NCERT) - 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).

Test: Muscle (NCERT) - Question 4

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 for Test: Muscle (NCERT) - 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.

Test: Muscle (NCERT) - Question 5

Actin binding sites are located on

Detailed Solution for Test: Muscle (NCERT) - 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.

Test: Muscle (NCERT) - Question 6

The type of muscle fibre present in the wall of alimentary canal is

Detailed Solution for Test: Muscle (NCERT) - 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.

Test: Muscle (NCERT) - Question 7

Which of the following statements is incorrect?

Detailed Solution for Test: Muscle (NCERT) - Question 7

The cytoplasm of striated muscle is called sarcoplasm.

Test: Muscle (NCERT) - Question 8

Which of the following statements about the striated muscles is incorrect?

Detailed Solution for Test: Muscle (NCERT) - Question 8

A myofibril has dark and. light bands. The dark band called A-band has at the centre, a comparatively less dark zone called H-zone. In the centre of H-zone is the M-line (Mittleschebe line). Each l-band has at its centre a dark membrane called Z-line (Zwischenschiebe line). The part of the myofibril between two successive Z-lines is called sacromere. In fact, each sacromere is a bundle of thick and thin myofilaments.

Test: Muscle (NCERT) - Question 9

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 for Test: Muscle (NCERT) - 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.

Test: Muscle (NCERT) - Question 10

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 for Test: Muscle (NCERT) - Question 10

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

190 videos|390 docs|210 tests
Information about Test: Muscle (NCERT) Page
In this test you can find the Exam questions for Test: Muscle (NCERT) solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Muscle (NCERT), EduRev gives you an ample number of Online tests for practice

Up next

190 videos|390 docs|210 tests
Download as PDF

Up next