第 1 题
1 分According to the 'lock and key' hypothesis, why is an enzyme able to catalyze only one specific type of chemical reaction?
GCE O-Level · Biology (6093)
Enzymes：练习题
5 道选择题即时批改，另有 1 道文字题附完整解题步骤，全部围绕「Enzymes」。
6 道题目7 分免费，无需注册
第 2 题
1 分A solution containing an enzyme and its substrate was initially incubated at \(5\,^{\circ}\text{C}\). The temperature of the reaction mixture was then gradually raised to \(37\,^{\circ}\text{C}\).
Which statement correctly explains why the rate of reaction increased?
第 3 题
1 分The diagram shows an energy profile diagram for a chemical reaction occurring with and without an enzyme.
Which labelled arrow represents the activation energy of the enzyme-catalysed reaction?
第 4 题
1 分Which chemical elements are present in all enzyme molecules?
第 5 题
1 分The diagram below shows the 'lock and key' model of enzyme action.
Which letter represents the enzyme-substrate complex?
第 6 题
2 分State the meaning of enzyme specificity and explain how it relates to the shape of an enzyme's active site.
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