Question

I band consist of:

• A. Only actin filament
• B. Only myosin filament
• C. Both actin and myosin filaments
• D. either actin filament nor myosin filament

Answer 1

Answer:

B. Only myosin filament

• Thick and thin filaments consist of myosin and actin, respectively.

• The H-zone and I-band consists of only myosin and actin, respectively.

• A-band contains both actin and myosin.

• M-line and Z-line are in the middle of thick and thin filaments, respectively.