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Question

The example of phosphoprotein is


A

Mucin

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B

Fibrinogen

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C

Casein

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D

Myosin

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Solution

The correct option is C

Casein


The correct option is (C):

Explanation for the correct option:

  1. Proteins are actually made up of amino acids.
  2. Phosphoproteins are the conjugate proteins which get modified by the attachment of the phosphate groups and so such a proteins is casein which is actually a milk protein.

Explanation for the incorrect options:-

Option (A):

  1. It is actually a glycoprotein which is a constituent of mucus.
  2. It basically gives lubrication to the cell signalling further forming the chemical barriers.

Option (B):

  1. It is a soluble protein which is present in the blood plasma.
  2. It will help in the stopping of the bleeding and also supports the wound by forming the clots.

Option (D):

  1. It is basically the fibrous globulin muscle that is helpful in the splitting of ATP.
  2. It is involved in the growth and tissue formation, metabolism, reproduction etc of the cells of the human body.

Final answer: The example of phosphoprotein is casein.


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