[問題] 普生(滲透壓?)與生化各一題

看板Biology (生物學)作者 (不空)時間17年前 (2009/02/01 13:23), 編輯推噓4(402)
留言6則, 5人參與, 最新討論串1/2 (看更多)
【問題】: If a cell with a solute potential of -0.2 MPa and a pressure potential of 0.4 MPa is placed in a chamber filled with pure water that is pressurized with 0.5 MPa, what will happen? A)Water will flow out of the cell. B)Water will flow into the cell. C)The cell will be crushed. D)The cell will explode. 第二題 The protein known as lysozyme(found in your tears) consists of 129 amino acids:lysine-valine-phenylalanine-glycine-cysteine-arginine-leucine. This is an example of (A) primary structure. (B) secondary structure. (C) tertiary structure. (D) quaternary structure. (E) none 【問題起因】: 研所考古題 【個人看法】: 第一題題意完全不懂啊~~我英文真的有那麼爛嗎... 第一次寫B,後來覺得是A 第二題生化是我的罩門 應該不是四級結構(器官層次) 我寫(C)三級結構 也有可能是是二級啦 先感謝各位的幫忙. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.229.27.81

02/01 14:18, , 1F
第二題只有胺基酸序列的話應該是一級結構
02/01 14:18, 1F

02/01 15:15, , 2F
胺基酸序列是一級結構 helix或sheet才是二級~
02/01 15:15, 2F

02/01 20:47, , 3F
水由低滲透壓往高滲透壓流...^^
02/01 20:47, 3F

02/01 21:23, , 4F
喔喔 所以第二題是一級結構 第一題是A囉?
02/01 21:23, 4F

02/05 19:36, , 5F
如果問lysozyme是三級,如果單指序列是一級
02/05 19:36, 5F

02/05 19:37, , 6F
看題目我看不太出來是問lysozyme 還是單指序列
02/05 19:37, 6F
文章代碼(AID): #19XJ7B5J (Biology)
文章代碼(AID): #19XJ7B5J (Biology)