Question

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

(a) Bilirubin

(b) Steroids

(c) Bile salts

(d) Uranium

The question was asked during an interview.

I would like to ask this question from Microalgal Culture topic in chapter Biotechnological Approaches of Microalgal Culture of Environmental Biotechnology

Answer 1

Correct choice is (d) Uranium

For explanation I would say: Bilirubin, steroids and Bile salts are produced by the organism and is not acquired from outside, however Uranium can be acquired from outside source. Hence, Uranium comes under endogenous group.