NEETZoologyLocomotion and Movement
Match the following taking help from diagram shown: Column A Column B Meromyosin a) Has active binding sites. Globular actin b) monomeric unit of myosin protein Globular Head c) monomeric unit of actin protein
Options
- AI (c), II (a), III (b)
- BI (b), II (c), III (a)
- CI (b), II (a), III (c)
- DI (a), II (b), III (c)
Correct answer
B. I (b), II (c), III (a)
Step-by-step solution
Each actin (thin) filament is made of two ‘F’ (filamentous) actins helically wound to each other. Each ‘F’ actin is a polymer of monomeric ‘G’ (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ‘F’ actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments. Each myosin (thick) filament is also a polymerised protein. Many