[普生] 兩題普生

[smallmin (小名)]

1. A hydrophobic portion of a substrate molecule would most likely fit into a
   _____ region of its enzyme's active
   A) positive charge
   B) negative charge
   C) hydrophilic
   D) hydrophobic
   E) polar

2. Suppose that gene X,Y and Z are linked and that crossing-over occurs between
   X and Y 20 percent of the time,between Y and Z 30 percent of time,and
   between X and Z 10 percent of time.Which gene are farthest apart on the
   chromosome?
   A) X and Y
   B) X and Z
   C) Y and Z
   D) X and Y,Y and Z (equally far apart)
   E) X and Z,Y and Z (equally far apart)

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help~~~
thx!!

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作者: hurryken (轉學毀滅倒數) 看板: TransBioChem
標題: Re: [普生] 兩題普生
時間: Sun Apr 10 23:02:09 2005

以下為本人解法 正確性不知(汗....)

※ 引述《smallmin (小名)》之銘言：
: 1. A hydrophobic portion of a substrate molecule would most likely fit into a
:    _____ region of its enzyme's active
:    A) positive charge
:    B) negative charge
:    C) hydrophilic
:    D) hydrophobic
:    E) polar

一個疏水區會跟疏水區結合 課本相關內容是在流體鑲嵌模型那邊

模的組成就是外親水 內兩層疏水  還有貫穿模的蛋白 在模內的部份也是疏水

這題是  (D)


: 2. Suppose that gene X,Y and Z are linked and that crossing-over occurs between
:    X and Y 20 percent of the time,between Y and Z 30 percent of time,and
:    between X and Z 10 percent of time.Which gene are farthest apart on the
:    chromosome?
:    A) X and Y
:    B) X and Z
:    C) Y and Z
:    D) X and Y,Y and Z (equally far apart)
:    E) X and Z,Y and Z (equally far apart)
: ----------------------------


題目要點簡述如下:  X跟Y距離20% Y跟Z距離30%   X跟Z距離10%

如果要畫成圖就是這樣

                   Y------X---Z
                      20%  10%

                   全部(Y-Z)是30%

他問你哪段長?
(A)距離20%
(B)距離10%
(C)距離30%
(D)X-Y跟Y-Z不等長  錯誤!
(E)同上

所以這題是(C)


ㄜ...錯了的話 不要打我><

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推 fierybear:帥...你考哪間  我要跟你分開考...
推 dong2:XD
推 Bioexplorer:考生科這兩題是基本題吧@@
推 loucy:我也覺得算基本.....= =
推 sheepm:他應該是看英文題有困難
推 fierybear:可是h先生講的很清楚易懂...
推 ayabbe:讚ㄛ