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Locomotion and Movement question

2012 · Q31
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Locomotion and Movement question

2012 · Q31

NEETBiologyLocomotion and MovementMCQ+4 / −1
Which one of the following pairs of chemical substances, is correctly categarised ?
  1. A
    Secretin and rhodopsin - Polypeptide hormones
  2. B
    Pepsin and prolactin - Two digestive enzymes secreted in stomach
  3. C
    Troponin and myosin - Complex proteins in striated muscles
  4. D
    Calcitonin and thymosin - Thyroid hormones
View written solutionFree

Correct answer: C

Troponin is a protein which is found on actin filament and myosin protein is found in myosin filament. Both actin and myosin are complex proteins in striated muscles.
Thymosin is a hormone secreted by the thymus that stimulates development of T cells. Prolactin is a hormone released by the pituitary gland that stimulates breast development and milk production in women. Rhodopsin, also known as visual purple, is not a hormone. It is a biological pigment in photoreceptor cells of the retina that is responsible for the first events in the perception of light.

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