[求救] 4題[遺傳學]題目請教 >"<

看板Biotech作者glabella ( )時間14年前 (2010/05/26 03:56)推噓2(2推 0噓 1→)

留言3則, 2人參與討論串1/2 (看更多)

1)The process of transformation was first identified by _____. A) Watson and Crick B) Griffith C) Avery D) Hershey and Chase 答案是(A)，我選(B)。這題不知道是不是答案錯了？ ----- 2)Which of the following is not a component of chromatin? A) histone proteins B) DNA polymerase C) RNA D) DNA binding proteins 答案是(B)。我只知道(A)組蛋白是染色質的成份。其他的為什麼是？ ----- 3)If a nucleic acid is found to contain 20% A and 20% T, the molecule is probably A) single-stranded DNA. B) double-stranded DNA. C) single-stranded RNA. D) double-stranded RNA. 答案是(B)。但總覺得(A)好像也有可能？ ----- 4)If DNA polymerase could add bases in the 3' to 5' direction, there would be no need for A) DNA ligase. B) Okazaki fragments. C) helicase. D) PCR. 答案是(B)。如果DNA複製的方向變了，原本的領導股不是反而就變成落後股嗎？這樣不是仍有岡崎片段？？ ----- 請大家幫幫我～ >"< -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 192.192.131.202

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bluecsky

05/26 05:45, , 1^F

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bluecsky

05/26 05:46, , 2^F

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conective

05/26 09:08, , 3^F

05/26 09:08, 3^F