Download App

Skeleton and Movement — Biology STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceBiologySkeleton and Movement3 Marks
Question
Myosin filament
✓

Answer

i. Myosin filament:

  1. Each myosin filament is a polymerized protein.
    Many meromyosins (monomeric proteins) constitute one thick filament.
  2. Myosin molecule consists of two heavy chains (heavy meromyosin / HMM) coiled around each other forming a double helix. One end of each of these chains is projected outwardly is known as cross bridge. This end folds to form a globular protein mass called myosin head.
  3. Two light chains are associated with each head forming 4 light chains/light meromyosin / LMM.
  4. Myosin head has a special ATPase activity. It can split ATP to produce energy.
  5. Myosin contributes 55% of muscle proteins.
  6. In sarcomere, myosin tails are arranged to point towards the centre of the sarcomere and the heads point to the sides of the myofilament band.

Image

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Write short notes" from Skeleton and Movement→Skeleton and Movement — all question types→Biology STD 11 Science question papers→Maharashtra Board STD 11 Science question papers→Maharashtra Board question paper generator→

Similar questions

Write a short note on lancelets.
→
human vertebral column. Sketch and label the structure of the vertebral column.
→
tracheids.
→
Identify and label the following structure. Write a note on it.
Image
→
Indigestion
→
Importance of botanical garden.
→
Leaf venation.
→
Cymose inflorescence.
→
Write a note on cell wall in Eukaryotic cells.
→
Write short note on lysosomes.
→