選修生物I-CH1-1細胞的的分子組成
Quiz
•
Biology
•
11th Grade
•
Practice Problem
•
Hard
葉東茂 葉東茂
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25 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
五碳醣中的碳分子之排列方式如附圖所示。請問去氧核糖與核糖在結構上的相異點主要是與第幾號碳有關?
Answer explanation
解答 B
解析 去氧核糖2號碳接H,核糖2號碳接OH
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
附圖是磷脂質在水溶液表面形成薄膜或在水溶液內聚集成球狀物的示意圖,試問為什麼磷脂質會在水溶液中產生這些構造?
Answer explanation
解答 C
解析 磷脂質的磷酸基具極性,使磷脂質分子具有「親水性頭部」,而脂肪酸不具極性,使磷脂質分子具有「疏水性尾部」。由於疏水性尾部與水分子互斥,導致磷脂質在水溶液表面形成薄膜或在水溶液內聚集成球狀物
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何項不是決定蛋白質形狀與構造的因素?
Answer explanation
解答 D
解析 (D)胺基與羧基構造皆相同
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
附圖為胺基酸基本結構,請問各種不同胺基酸主要之差異在於下列哪一位置的不同?
Answer explanation
解答 C
解析 各種胺基酸差異在於側鏈R不同
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者是DNA與RNA之共同點?
Answer explanation
解答 D
解析 (A)DNA具有去氧核糖 (B)只有DNA有胸腺嘧啶 (C)只有RNA有尿嘧啶
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者不是由兩個分子單醣結合而成的雙醣
Answer explanation
解答 C
解析 (C)肝醣為多醣
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
構成生物體體內的主要物質有水、醣類、蛋白質、脂質和核酸,還有少量的維生素及無機鹽類。這些物質與生物體的新陳代謝、生長、生殖、適應等生命現象有關。下列有關上述物質的敘述,何者錯誤?
Answer explanation
解答 C
解析 (C)人體皮膚在曬太陽後可合成維生素D
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