25. In the infection of E. coli by N phage, which description for the binding ability of cro is correct? (A)OL1 ＜OL2＜OL3 (B) OR1 ＞ OR2 ＞ OR3 (C) OR1＜ OR2 =OR3 (D)OL1＜OL2 =OL3

25. In the infection of E. coli by N phage, which description for the binding ability of cro is correct?
(A)OL₁ ＜OL₂＜OL3
(B) O_R1 ＞ O_R2 ＞ O_R3
(C) O_R1＜ O_R2 =O_R3
(D)OL₁＜OL₂ =OL3

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統計： A(0), B(2), C(0), D(0), E(0) #3188868

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木公診間裝潢中

B1 · 2024/01/10

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In the infection of ...

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1. Restriction endonucleases are commonly used in DNA cloning. Which of the following is not true? (A) Restriction endonucleases are main components of the bacterial restriction- modification (R-M) system. (B) The normal function of the R-M system is to degrade DNA from invading phages. (C) In a R-M system, phosphatases are frequently used to protect the same DNA sequences of bacteria from digestion by the restriction endonucleases. (D) The most useful R-M systems in DNA cloning are the type II system, and the restriction activities do not need ATP as a cofactor. (E) In the type III R-M systems, one enzyme contains two different subunits, one for DNA recognition and modification, and another for DNA cleavage.

25. In the infection of E. coli by N phage, which description for the binding ability of cro is correct?
(A)OL₁ ＜OL₂＜OL3
(B) O_R1 ＞ O_R2 ＞ O_R3
(C) O_R1＜ O_R2 =O_R3
(D)OL₁＜OL₂ =OL3

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