問題詳情
78. Why are viruses referred to as obligate parasites?
(A) They cannot reproduce outside of a host cell.
(B) Viral DNA always inserts itself into host DNA.
(C) They invariably kill any cell they infect.
(D) They can incorporate nucleic acids from other viruses.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增