[RONIT SHARMA]

ya, me too considered it as precipitated protein (free protein ) and choose option C

Yes, the word 'free protien' created a lot of confussion. And can anyone frame the explation for this question

This question is simple. Free protein means that are not precipitated. Here you will use the concept of "Salting In" and "salting out". Refers any down stream processing book.

Actually, a college professor mailed me that information about Levenspiel. I will mail him as to what exact edition and chapter he is referring to. But, I don't know if he will be able to reply within the weekend.

Also, I haven't attempted the cytokinesis question, and should not say anything regarding that. But, probably, colchicine acts by inhibiting spindle fibre formation is specifically mitotic inhibitor and cytokinesis occurs thereafter, so it might not be accepted. So, its better to look a bit deeper into that.

Chemical reaction engineering 3rd edition by levenspiel.