中四生物練習: 第11章(I)

7      a      i       2                                                                                                                      1分

                ii      8                                                                                                                      1分

        b      38                                                                                                                            1分

Q. 8

   (i)     染色體排列在細胞的赤道位置                                                                            1分

        (ii)    前期                                                                                                                        1分

        (iii)   後期                                                                                                                        1分

        (iv)   任何一項：                                                                                                            1分

            DNA進行複製／合成

            染色體進行複製

        (v)    末期                                                                                                                        1分

(5分)

Q. 9

    a      12 條染色單體                                                                                                      1分

                染色單體分離                                                                                                        1分

                標註：著絲點，染色單體                                                                             1分 x 2

        b      任何三項：                                                                                                     1分 x 3

    DNA分子進行複製。

                新細胞器形成，如線粒體。

                蛋白質合成。                                                                                                              

                能量儲備增加。

 (7分)

Q. 12

(a)    4à2à3à1                                                                                                                                    2/0

(b)    (i)     (4)比(1)多一倍                                                                                                                       1

       (ii)   (4) 處於前期, 細胞的DNA/染色體已被複製;                                                                    1

              經歷來(3)和(2)後, 細胞染色體中的姊妹染色單體相互分離;                                             1

              所以(1)的DNA減少一半                                                                                                      1

 (6分)