問題詳情
78. What acts as the nucleophile in the mechanism of nucleotide addition by RNA polymerase?
(A) The 5' phosphate of an incoming nucleotide
(B) A water molecule
(C) A 5' hydroxyl of the template DNA
(D) A 3' hydroxyl from the RNA being extended
(E) An aspartate in the active site
(A) The 5' phosphate of an incoming nucleotide
(B) A water molecule
(C) A 5' hydroxyl of the template DNA
(D) A 3' hydroxyl from the RNA being extended
(E) An aspartate in the active site
參考答案
無參考答案
內容推薦
- ( ) The game is eight Saturday morning.(A) on; on (B) on; at (C) at; on (D) at; at
- Which of the following is related to the function of proofreading step?(A) Riboswitch (B) EF-G i
- DNA polymerase I synthesizes new DNA with very high fidelity, due to its ________.(A) high proce
- Restriction-modification systems:(A) exist in all organisms as a protection against foreign DNA
- What role does AP endonuclease have in the base-excision repair system?(A) It removes the damage
- ( ) My brother is sitting at the table and dinner now.(A) eat (B) let’s eat (C) don’t eat (D) ea
- ( ) Betty is doing her homework, and we , too.(A) do (B) be (C) are (D) is
- In the erythrocyte, glycolysis produces ________that is further metabolized to ________.(A) lact
- The energy of a photon absorbed by an antenna molecule of the photosystem finds its way to a chl
- ( ) A: How’s your brother doing?B:(A) He’s not ready. Wait, please. (B) He’s funny. (C) He’s ove
內容推薦
- 【題組】＿＿＿＿＿＿ There is a tall b ng near the train station.編輯私有筆記及自訂標籤國一英文上第三次-107 年 - 2018高雄市市立大樹國中七
- There are two code sequences for a particular computer, and three classes of instructions (A, B,
- The photosynthetic electron transport system includes the transmembrane complexes PSI, PSII and
- 閱讀測驗： A. It is a kind of food. It grows best in hot, wet weather, usually on the farm under water.
- 【題組】To which of the positions marked [1], [2], [3], [4], and [5] does the following sentence bes
- 【題組】Why does the writer mention the Diagnostic and Statistical Manual of Mental Disorders in par
- 【題組】According to paragraph 2, a person who has been diagnosed with schizophrenia and who is devo
- 【題組】Which of the sentences below best expresses the essential information in the highlighted sen
- 1 民營鐵路非因不可抗力而停止營運者，處新臺幣多少罰鍰？(A) 10 萬元以上 50 萬元以下 (B) 30 萬元以上 150 萬元以下(C) 60 萬元以上 300 萬元以下 (D) 100 萬元以
- It’a a good time to find out more about yourself. You can take thetest to ______ whether you get a
- Which of the following is least related with RNA interference?(A) RISC (B) Drosha (C) Dicer (D)
- The man ________a blue tie is talking to the woman_______a purple dress. I know they are Amy’s par
- The girl _____ is going to the movies with me this weekend.(A) I met on the Net(B) who I enjoy ta
- Turning off the light after leaving the room is a good way to save_____.(A) notebook (B) dictionar
- Peter enjoys many outdoor ______, like hiking or rock climbing.(A) activities (B) habits (C) squar
- The essential oil is made ______ lavender, and the box is made_____ used paper. lavender 薰衣草(A) o
- _______ is the boy ______ is helping the old man to walkacross the street?(A) Who；which (B) Who；w
- The school bus _________ a lot of students. It is very noisy.(A) with (B) full of(C) have (D) is f
- My brother has a ______ of taking a shower in the morning everyday.(A) copy (B) habit (C) breath (
- Don’t play online games______ you finish your homework.(A) so (B) and (C) until (D) which
- Brian didn’t pass the math test. He got a grade _____ sixty.(A) above (B) abroad (C) below (D) bot
- Nick Vujicic,_____ speeches have cheered up many youngpeople, is a man ______ no arms and no legs
- Taipei , _______ is a large city in Taiwan, draws a lots of touristsevery year.(A) where (B) whic
- Bubble tea isn’t a new arrival in the Tokyo drink landscape, but the beverage has recently enjoyed a
- Coco practiced the song________, but she couldn’t sing well.(A) dozens of times (B) a dozen time(