
TCSS 生物 第4章 酶和新陳代謝
Authored by Yuk Lam
Biology
9th Grade
Used 3+ times

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28 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
酶不能在高溫下發揮作用,因為 (9015)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪一曲線圖顯示澱粉酶和澱粉的熱混合液從80°C冷卻至0°C期間的反應速率?(9207)
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
回答以下題時須參考以下實驗。四片曾浸於不同溶液的濾紙小圓片(1至4)放在澱粉瓊脂平面的表面,如下圖所示:
在25°C的溫度下溫培一小時後,取出小圓片,用碘液沖浸澱粉瓊脂平面。下列哪一項顯示實驗的可能結果?(9305)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
回答以下題時須參考以下實驗。四片曾浸於不同溶液的濾紙小圓片(1至4)放在澱粉瓊脂平面的表面,如下圖所示:
回答以下題時須參考以下實驗。四片曾浸於不同溶液的濾紙小圓片(1至4)放在澱粉瓊脂平面的表面,如下圖所示:幾分鐘後再檢視澱粉瓊脂平面,棕色區消失而全個平面呈藍黑色。出現這種現象的可能理由是(9306)
棕色區的糖分子結合成澱粉。
棕色區旁的澱粉擴散入棕色區內。
棕色區暴露於空氣時轉為藍黑色。
碘液與棕色區下層的澱粉結合。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下曲線圖顯示溫度對唾液澱粉作用的影響:
下列有關唾液澱粉酶的敘述,哪項是正確的?(9450)
它在0°C時變性。
溫度升高時,它的作用穩定加快。
它在60°C時最活躍。
它在80°C時被殺死。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下圖顯示的裝置用以研究澱粉酸對澱粉的作用。三小時後,把燒杯內的水與本立德溶液混和,然後加熱,有紅色沉澱物出現。(9505)
根據上述實驗可以獲得下列哪項推論?
消化澱粉會產生葡萄糖。
澱粉不能通過透析管。
透析管只容許還原糖通過。
透析管內溶液的水潛能增加。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列有關酶的敘述,哪項是正確的?(0104)
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