本题目来源于试卷: Unity and Diversity A.5 Viruses，类别为 IB生物学
[单选题]
Viruses, compared tof+05*ian .g7 vhq xr-y7r1hw wgb.bg aizf73-r i:uqfw6z.) g rv5tw8y0k tiz living organisms, are very small. Which other characteristic listed below distinguishes viruses from unicellular 8 -vuwk7 )3yiq zf:5r.wit6fztg0 rziliving organisms?
A. Contain genetic material
B. Contain cytoplasm
C. Lack enzymes
D. Genetic material is surrounded by a capsid
参考答案: D
本题详细解析:
Choice D is correct because The structure of all virlc6 hs8fc,1 ayuses includes the presence of a capsid, which surrounds the genetic material (Choice D). Both viruses and living organisc8h6fl yc1 sa,ms contain genetic material (Choice A). Unicellular living organisms contain cytoplasm (Choice B). Some viruses lack enzymes, but not all viruses lack enzymes (Choice C).
| 
