第5章 小測2
Quiz
•
Biology
•
7th - 9th Grade
•
Practice Problem
•
Medium
Aristo Biology
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6 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在低溫時,大部分酶
會被殺死。
會變得活躍。
並不活躍。
會變性。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當温度上升,酶的反應速率會 (a) ________________。在最適温度時,酶的反應速率達到 (b) ________________。
(a) 上升;(b) 最低
(a) 上升;(b) 最高
(a) 下降;(b) 最低
(a) 下降;(b) 最高
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當温度高於最適温度時,酶的反應速率會急劇 (c) ________________。這是因為酶會 (d) ________________。
(c) 上升;(d) 變得活躍
(c) 上升;(d) 變性
(c) 下降;(d) 被殺死
(c) 下降;(d) 變性
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
不同的酶有不同的最適pH值,酶在這pH值時的反應速率 (a) ________________。大多數酶在極端的pH值時會 (b) ________________。
(a) 最高;(b) 變得不活躍
(a) 最高;(b) 變性
(a) 最低;(b) 被殺死
(a) 最低;(b) 變性
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
汞和鉛離子是酶抑制劑的例子,這些物質會 ________________ 酶的反應速率。
提高
減低
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鬆肉粉可用於軟化肉類,因為它含有 (a) ________________,有助分解肉類中的 (b) ________________。
(a) 澱粉酶;(b) 澱粉
(a) 澱粉酶;(b) 蛋白質
(a) 蛋白酶;(b) 澱粉
(a) 蛋白酶;(b) 蛋白質
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