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【单选题】
富含β-胡萝卜素的是()
A.
红薯
B.
南瓜
C.
菠菜
D.
其余都是
题目标签：胡萝卜素
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【单选题】下列有关胡萝卜素的叙述，错误的是[ ]
A.
胡萝卜素是脂溶性色素，宜用石油醚等有机溶剂萃取
B.
胡萝卜素呈橙黄色，是常用的食用色素
C.
胡萝卜素经人体吸收后能在体内转化成维生素A
D.
植物中只有胡萝卜中含有胡萝卜素
【单选题】Passage One With rapid growth of world population, mainly in developing countries, the available cultivable land per person has declined steadily since 1960 and will decease by half over...
A.
developing genetically modified or nutritionally improved crops
B.
incorporating pest-resistant or virus-resistant genes into seeds of crops
C.
improving the ability of seeds to resist water shortages in certain regions
D.
identifying genes that helps neutralize aluminum toxicity in crops
【单选题】经分析一份膳食中含有500ug视黄醇，1800ug的β-胡萝卜素，240ug的α-胡萝卜素，这份膳食可以提供的维生素A是（）ugRAE？
A.
660
B.
670
C.
820
相关题目：
【单选题】下列有关胡萝卜素的叙述，错误的是[ ]
A.
胡萝卜素是脂溶性色素，宜用石油醚等有机溶剂萃取
B.
胡萝卜素呈橙黄色，是常用的食用色素
C.
胡萝卜素经人体吸收后能在体内转化成维生素A
D.
植物中只有胡萝卜中含有胡萝卜素
【单选题】Passage One With rapid growth of world population, mainly in developing countries, the available cultivable land per person has declined steadily since 1960 and will decease by half over...
A.
developing genetically modified or nutritionally improved crops
B.
incorporating pest-resistant or virus-resistant genes into seeds of crops
C.
improving the ability of seeds to resist water shortages in certain regions
D.
identifying genes that helps neutralize aluminum toxicity in crops
【单选题】经分析一份膳食中含有500ug视黄醇，1800ug的β-胡萝卜素，240ug的α-胡萝卜素，这份膳食可以提供的维生素A是（）ugRAE？
A.
660
B.
670
C.
820
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