Noun phrases in spoken academic styles

Spoken academic styles vary from being rather formal (e.g. large, formal lectures) to quite informal (e.g. small-group tutorials where teacher and students have built up a relaxed, friendly relationship). Noun phrases more typical of written styles, with much premodification and postmodification, occur in formal lectures, etc. (noun phrases in green, premodification and postmodification in bold type)

[lecture on English literature]
But despite the apparent diversity of opinion, Anti-Pamelists were united on what they saw as three serious problems. All of which pertained to the earlier apparently subversive part of the novel.

[endocrinology lecture]
So you ought to be able to work out what seventy per cent of sixteen point eight millimoles per minute is in terms of the proximal tubular sodium reabsorption per minute.

In more informal lecturing styles and in informal tutorials and classes, typical spoken noun phrases are common, where information is added incrementally rather than integrated into a single noun phrase (noun phrases in green, noun heads in bold type):

[informal literature seminar]
It is a fascinating question. It’s a question of the kind that I don’t think we pursue enough. And it’s one that I’m still wrestling with.
(compare an integrated alternative: It is a fascinating and under-researched question which is the subject of continuing investigation.)