NEET AIPMT SOLVED PAPER 2001

  • question_answer
                                      Cytochrome is:

    A)                                                                                                                                                                            metallo fiavoprotein                      

    B)                 Fe containing porphyrin pigment

    C)                 glycoprotein                                                      

    D)                 lipid

    Correct Answer: B

    Solution :

                    Cytochrome is the respiratory pigment. It is composed of protein, iron and porphyrin ring. It functions as an enzyme in the respiratory chain. Unlike in haemoglobin the metal atom in the porphyrin ring must change it's valency for the molecule to function. Cytochromes are basically located in inner mitochondrial membranes and thylakoids of chloroplasts.


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