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Which of the following xenobiotic compounds does not come under exogenous group?

(a) Iron

(b) Drugs

(c) Food additives

(d) Carcinogens

This question was addressed to me in an interview for internship.

The query is from Microalgal Culture in section Biotechnological Approaches of Microalgal Culture of Environmental Biotechnology

1 Answer

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Best answer
Right choice is (a) Iron

Easy explanation: Iron is present as a natural constituency in the blood of an organism but certain substances like Drugs, Food additives, Carcinogens are transferred to an organism from outside sources. So, they are categorized under exogenous group.

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