Which one of the following pairs of chemical substances, is correctly categorised?

  • Option 1)

    Pepsin and prolactin- Two digestive enzymes secreted in stomach

  • Option 2)

    Troponin and myosin - complex proteins in striated muscles

  • Option 3)

    Secretin and rhodopsin - Polypeptide hormones

  • Option 4)

    Calcitonin and thymosin - Thyroid hormones

 

Answers (1)

 

Structure of Contractile Proteins -

Troponin

- wherein

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.

 

Troponin, Actin and myosin are characteristics of striated muscles or stripped muscles.

 


Option 1)

Pepsin and prolactin- Two digestive enzymes secreted in stomach

Incorrect option

Option 2)

Troponin and myosin - complex proteins in striated muscles

correct option

Option 3)

Secretin and rhodopsin - Polypeptide hormones

Incorrect option

Option 4)

Calcitonin and thymosin - Thyroid hormones

Incorrect option

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