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 to lig)lt*zgx e0ubd x6x 80,ec mt0sblp.j.) g l2 by2l2yiving organisms, are very small. Which other characteristic listed below distinguishes viruses fromsy2pljl y2.bl) g2ib . unicellular living 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 structrxq.xcvhtnx 1,z1 3n 5 /jzc5rure of all viruses includes the presence of a capsid, which surrounds the genetic material (Choice D). Both viruses zq/, hn15x1t3 nr5zj. vxrxccand living organisms contain genetic material (Choice A). Unicellular living organisms contain cytoplasm (Choice B). Some viruses lack enzymes, but not all viruses lack enzymes (Choice C).
| 
