The correct answer is- are normal microbiota for many individuals
Explanation:
Opportunistic organisms are those organisms that normally do not cause infection because their infection and growth are resisted by the host immune system and the presence of normal microflora of the body.
So opportunistic fungi can be present with normal microbiota in many individual without causing any infection but when the host immune system falls and the normal microbiota gets disturbed these opportunist fungi gets space and environment to grow and cause infection.
Some of the opportunistic fungi are- <em>Candida, Aspergillus, Cryptococcus</em>, etc. Therefore the correct answer is- are normal microbiota for many individuals.
The bacteria infected with viruses that had radioactive DNA had become radioactive. The bacteria that had been infected with viruses marked with radioactive proteins were not radioactive.
<h3><u>One of the reasons we can't get an accurate count is that the bulk of the things that have yet to be discovered and described are in the realm of the very small: insects, bacteria and other microbes</u></h3>
