什么是营养素?
食物与营养

Flashcard
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Science
•
9th Grade
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
营养素是指人体所需的各种化学物质,包括蛋白质、脂肪、碳水化合物、维生素和矿物质等。
2.
FLASHCARD QUESTION
Front
膳食纤维的作用是什么?
Back
膳食纤维有助于消化,预防便秘,但不被视为营养素,因为它不提供能量。
3.
FLASHCARD QUESTION
Front
维生素的主要功能是什么?
Back
维生素在体内起到调节生理功能的作用,虽然需求量小,但对健康至关重要。
4.
FLASHCARD QUESTION
Front
为什么冬天需要增加脂肪摄入?
Back
脂肪能为身体提供热量,帮助保持体温,尤其在寒冷的天气中。
5.
FLASHCARD QUESTION
Front
碳水化合物的主要功能是什么?
Back
碳水化合物是主要的能量来源,帮助身体维持日常活动和生长。
6.
FLASHCARD QUESTION
Front
什么是蛋白质的主要功能?
Back
蛋白质是构建和修复身体组织的基础,参与细胞的生长和修复。
7.
FLASHCARD QUESTION
Front
水在人体中的作用是什么?
Back
水是生命的基础,参与体内的化学反应,帮助调节体温和运输营养物质。
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