
1211BIO_Enzyme_Ex.
Quiz
•
Biology
•
9th - 12th Grade
•
Practice Problem
•
Hard
溢升 陳
Used 3+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下圖顯示受質 W 經過連串的酶反應後轉化成
產物 Z。
假如在反應過程中加進酶 Q 的抑制劑,則會
出現以下哪個情況?
受質 W 不會轉化成中間物 X。
中間物 X 的濃度上升。
中間物 Y 不會形成。
產物 Z 的濃度上升。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪項有關酶的描述是不正確的?
酶是由細胞產生的。
酶在極端的温度下變性。
同一反應可以由多於一種特定酶來催化。
每次遇上相同的受質,酶均會產生同樣的生成物。
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
圖示的裝置用來探究馬鈴薯組織中過氧化氫酶的作用,當中有兩支試管,試管 1 中有氣泡釋出而試管 2 則沒有。
在試管 1 中,過氧化氫被分解成
氫和氧。
氫和水。
氧和水。
氫、氧和水。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
這兩支試管可用來
顯示過氧化氫酶能加速分解過氧化氫。
顯示過氧化氫酶是蛋白質。
顯示過氧化氫酶必須在活組織裏才能發揮
功效。
顯示經煮沸後的過氧化氫酶會失去其功
能。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在哪個 pH 值下,這兩種酶之中有一種活性最高,而另一種則已變性?
pH = 5
pH = 6
pH = 8
pH = 10
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