作者roscoeyang (熊熊)
看板TransBioChem
標題[生物] 細菌病毒章節問題
時間Sun Jun 10 12:34:40 2012
1）emerging viruses arise by
A)mutation of existing viruses
B)the spread of viruses to a new host species
C)border dissemination of an existing viruses within the current host population
D)all of the above
E)none of above
答案是A,可是我覺得是D
2)an organism that is modified by introduction of a DNA sequence from another organism is called
A)transformed
B)transgenic
C)transferred
D)transduced
E)a muti-species
答案是B,但是我覺得是A,因為transformation (性狀轉變)不是細菌病入外來DNA 嗎？
另外請教，provirus /prophange差在哪裡呢？
謝謝大家
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1F：→ eric4111tim:產生新病毒的先決條件為突變 06/10 23:30
2F：→ eric4111tim:傳給不同物種 也是要先經由突變再換宿主 因為每個病毒 06/10 23:31
3F：→ eric4111tim:寄生都有一定的宿主限制(host range)突變後才可下一步 06/10 23:33
4F：→ eric4111tim:性狀轉變是併入外來DNA沒錯 可是是併入死去細菌的DNA 06/10 23:37
5F：→ eric4111tim:並完全改變其性狀，而genetic僅是互相交換DNA 沒有要 06/10 23:38
6F：→ eric4111tim:且完全轉換性壯 我覺得跟modified這個字有關欸 06/10 23:47