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試卷名稱：105年 - 105 臺灣聯合大學系統_學士班轉學生考試試題：普通生物學#124831
年份：105年
科目：研究所、轉學考(插大)-普通生物學
3. Which of the following statements is TRUE of restriction enzymes?
(A) they are not naturally produced by bacteria, but are bioengineered by humans
(B) they cleave DNA only at sites of adjacent thymine bases
(C) they cut at random sites within a genome
(D) there are less than 10 restriction enzymes known
(E) they protect bacterial cells from invasion by foreign DNA
