
南一國中自然7上ch2-2
Authored by 南一 自然
Science
7th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關酵素的性質,下列敘述何者錯誤?
細菌中也含有酵素
酵素參與生物體內的代謝作用
酵素的種類不同,其功能也不同
酵素在活的生物體內才有作用
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
睿晞想將蛋白質分解成較小的分子,在燒杯中放了5克的蛋白質和5克的蛋白酶,並靜置一段時間。待反應完成後,蛋白酶的重量為何?
10克
5克
2克
0克
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
珍珍將吃剩的食物冰入冰箱中,請問此舉動主要的目的是?
放置於冰箱的食物可以永久保存
冰箱可以殺死食物中的細菌
冰箱可以降低細菌的酵素活性,延長食物保鮮期
冰箱可以讓食物中的養分被分解,利於吸收
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列對於酵素的敘述,何者正確?
酵素的成分是醣類
人類具有能夠分解纖維素的酵素
酵素只能把大分子變成小分子,而無法把小分子合成大分子
酵素易受溫度影響
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某酵素適合的作用溫度為25℃~50℃,有關此酵素的敘述,下列何者正確?
5℃時的活性比0℃時小
25℃時的活性比20℃時小
30℃時的活性比25℃時小
60℃時的活性比50℃時小
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
南美洲人利用玉米、馬鈴薯等,將原料用口咀嚼再吐出來可製造出奇嘉酒,因為口水中含有:
酵素
激素
維生素
抗生素
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
沒有甜味的麵粉和水是製造吐司的主要原料,將微甜或沒有甜味的白吐司放入口中咀嚼二分鐘,吐司味道有什麼樣的變化呢?
變酸
變苦
變甜
不改變
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