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NEET2026BiologyChapterActual

Match List I with List II regarding the proteins found in muscular tissue : List I List II A Troponin 1 Monomeric protein constituting the thick filament B Meromyosin 2 Oxygen storing pigment in muscle fibres C F-actin 3 Polymer of 'G' actins D Myoglobin 4 Masks active binding sites for myosin Choose the correct answer from the options given below :

Options

  1. AA-1, B-4, C-3, D-2
  2. BA-4, B-3, C-1, D-2
  3. CA-4, B-1, C-3, D-2
  4. DA-4, B-1, C-2, D-3

Correct answer

C. A-4, B-1, C-3, D-2

Step-by-step solution

Troponin is a complex protein distributed at regular intervals on tropomyosin. In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments. Thus, A matches with 4. Meromyosin is the monomeric protein that polymerises to form the thick filament (myosin). Thus, B matches with 1. F-actin (filamentous actin) is a polymer of globular or 'G' actins. Thus, C matches with 3. Myoglobin is the red-coloured, oxygen-storing pigment present in muscle fibres. Thus, D matches with

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