Home
Class 11
BIOLOGY
Statements A-bands of the muscle are d...

Statements
A-bands of the muscle are dark and contain myosin
I-band are the light bands and contain action
During muscle contration the A-band contracts
The part between the two Z-lines is called as saromere
The central part of thin filament, not over-lapped by thick filament is called H-zone of the above statements.

A

A,C,E are correct while, B,D are incorrect

B

A,B,C and E are correct while D is incorrect

C

A,B and D are correct while C and E are incorrect

D

A,B and C are correct while D and E are incorrect

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • KINGDOM FUNGI (KINGDOM MYCOTA)

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|152 Videos
  • MORPHOLOGY OF FLOWERING PLANTS (ANGIOSPERMS)

    TRUEMAN BIOLOGY|Exercise Multiple Choice Questions|339 Videos

Similar Questions

Explore conceptually related problems

Read the statement regarding myofibril and choose the correct option 1. Each myofibril has alternate dark and light bands. 2. In the centre of each 'A' band is an elastic fibre called 'Z' -line 3. 'A' and 'I' bands are arranged alternately throughout the length of myofibril 4. Sarcomere is the functional unit of contraction 5. Central part of thick filament not overlapped by a thin filament is the 'M' line

Go through the following statements During muscle contraction, the width of A-band remains constant while I-band shortens. During muscle contraction, the Ca^(2+) released from the SR bind to the troponin component of thin filament The process of muscle contraction is faster in smooth muscle as they have a well developed sarcoplasmic reticulum. The red muscle fibres have abundant mitochondria, low glycogen and poorly formed sarcoplasmic reticulum.

Given below are the following statements regarding actin (i) Is the main constituent of light band (ii) Forms the Anisotropic band on its own (iii) Are te thicker filaments Are a part of the H zone. Choose the correct option

Which of the statements about the mechanism of muscle contraction are correct? I. acetylcholine is released when the neural signal reaches the motor end plate II. muscle contraction is initiated by a signal sent by CNS via a sensory neurone III. during muscle contraction, isotropic band gets elongated. IV. repeated activation of the muscles can lead to lactic acid accumulation.

Which of the following statements are correct regarding muscle proteins ? (i) Actin is a thin filament and is mde up to two F-actin (ii) The complex protein, tropomyosin is distributed at regular intervals on the troponin (iii) Myosin is a thick filament which is also a polymerised protein. (iv) The globular head of meromyosin consists of light meromyosin (LMM).

During muscular contraction, which of the following events occur? (i)H-zone disappears (ii) A-band widens (iii) I-band reduces in width (iv) Width of A-is unaffected (v) M-line and Z-line come closer