有兩包未標示的白色粉末,已知它們分別為葡萄糖與麵粉。下列哪一項實驗最適合用來區分兩者?
生物

Quiz
•
Other
•
7th Grade
•
Hard
Lihan Wang
Used 29+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
取適量粉末配成水溶液,分別直接加入少量本氏液,觀察是否變藍色
取適量粉末配成水溶液,分別直接加入少量本氏液,觀察是否變紅色
取適量粉末置於試管,分別加入少量碘液,觀察是否變紅色
取適量粉末置於試管,分別加入少量碘液,觀察是否變藍黑色
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
乳牛吃草後在體內產生牛奶,其生理作用過程為何?
僅有分解作用
僅有合成作用
先進行分解作用,再進行合成作用
先進行合成作用,再進行分解作用
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
人體分泌的唾液中含有澱粉酶,但卻無法加速纖維素的分解利用,理由為何?
酵素的成分是蛋白質
酵素的活性易受環境的溫度影響
酵素的活性和環境的酸鹼性有關
酵素和作用對象間有專一性
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列關於養分的敘述,何者正確?
維生素和礦物質在生物體內都無法產生能量
人體缺乏維生素D會導致夜盲症
鐵質攝取不足會骨質疏鬆
鐵質攝取不足會骨質疏鬆
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在光合作用的過程中,來自太陽的能量會儲存在下列何種分子上?
水
氧氣
葡萄糖
二氧化碳
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於植物行光合作用的敘述,下列何者正確?
植物行光合作用的產物可轉換成澱粉
植物行光合作用所需的水分由氣孔進入
植物行光合作用釋出的O2主要是來自CO2的分解
植物行光合作用的先決條件是需具有維管束的構造
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於各種動物的攝食構造,下列何者錯誤?
蝴蝶:管狀口器
水螅:形成食泡
獅子:犬齒發達
牛:臼齒發達
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