Answer: Hi there :) the answers you are looking for are
5. D) All of the above
6. A) Rapidly make many copies of a gene or other DNA segment.
7. B) Insulin
8.) is 1,2,3 I don’t see an option for it but that is the answer so I’m not sure on this one. Sorry I hoped I helped on the other ones!!
I think the answer would be needs. Hope this helps.
density, it's a mass per unit volume
Explanation:
Option D is the correct option.