Whatever "a biological sciences research institution" is, it is either a place that has biological labs and does research that might lead to a discovery or not. If you meant the former, they certainly did not present themselves that way on their public web page at least. If you meant the latter than your rhetorical challenge to show what discoveries they have made seems rather hollow.
They do seem to present themselves as knowledgeable about the sciences. And perhaps some of the people who are members also do science and may have made some scientific discoveries. But I don't see anything from them that makes me think they are claiming to be doing biological research as an Institution. Did you mean to conflate this or was it an accident?
I get the feeling what you were really trying to say is that we should regard them as quacks because they were not being straightforward about being nothing but a bunch of quacks. But people that don't already think they are quacks may find the reasoning circular so you needed a less straightforward way of making your point.
The answer in their case is; not. They call themselves "The Discovery Institute", but they don't make any discoveries and they aren't set up to make any as far as I can tell.