MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

The Cross Bridge Cycle

All of the fo...

Question

All of the following changes occur during contraction of a muscle fibre except

A

Width of A-band and I-band remain the same.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Actin filaments slide over myosin filaments.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Length of actin and myosin filaments remain the same.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Width of H-zone decreases

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Width of A-band and I-band remain the same.
Width of I-band decreases during muscle contraction.

Suggest Corrections

thumbs-up

3

Similar questions

Q. Choose the option having all the correct statements:
I. Thin and thick filaments consist of myosin and actin, respectively.
II. The H-zone and I-band consists of only myosin and actin, respectively.
III. A-band contains both actin and myosin.
IV. M-line and Z-line are in the middle of thin and thick filaments, respectively.

Q. One myosin filament in the myofibril of skeletal muscle fibre is surrounded by how many actin filaments?

Q. Assess the statements.
1. A-bands of the muscle is dark and contain myosin.
2. I-bands are the light bands and contain actin.
3. During muscle contraction the A-band contracts.
4. The part between the two Z-lines is called as sarcomere.
5. The central part of thick filament, not overlapped by thin filament, called H-zone.
Of the above statements.

Q. One myosin filament in the myofibril of skeleton muscle fibres is surrounded by how many actin filaments.

Q. Value based questions.
Explain how any change in the A, H and I band lengths are brought about in terms of what happens to the actin and myosin filaments.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Skeletal Muscle

BIOLOGY

Watch in App

explore_more_icon

Explore more

The Cross Bridge Cycle

Standard XII Biology

Join BYJU'S Learning Program

CrossIcon