問題詳情
10. Why is there a need to produce Okazaki fragments on the lagging strand, but NOT on the leading strand of DNA?
(A) It is substantially more efficient to make several shorter strands rather than one longer strand of DNA.
(B) The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5’ to 3’ direction only.
(C) There lacks enough DNA ligase for bonding Okazaki fragments together if they were produced from both parentalstrands.
(D) By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used forchromosomal replication.
(E) It is faster to make several smaller fragments than one larger fragment.
(A) It is substantially more efficient to make several shorter strands rather than one longer strand of DNA.
(B) The two parental strands of DNA are antiparallel and DNA polymerase makes DNA in the 5’ to 3’ direction only.
(C) There lacks enough DNA ligase for bonding Okazaki fragments together if they were produced from both parentalstrands.
(D) By having one leading strand and one lagging strand the cell can limit the amount of DNA polymerase used forchromosomal replication.
(E) It is faster to make several smaller fragments than one larger fragment.
參考答案
答案：B
難度：簡單0.736842
統計：A(0),B(14),C(3),D(0),E(0)
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