Vitamin D is ___ in the body in response to sun exposure or can be gotten from the diet and taken in supplement form.(1.0) A. sacrificed B. metabolized C. synthesized D. decomposed 相关知识点: 试题来源: 解析 C 反馈 收藏
百度试题 题目Vitamin B enables the body to___full use of food taken in. A.makeB.reachC.putD.bring相关知识点: 试题来源: 解析 A 反馈 收藏
③ Vitamin D is found throughout the body and serves as a signaling (signal) part to turn cells on and off. 相关知识点: 试题来源: 解析 答案见上③signaling 解 :考查动名词。 句意:维生素 D 遍布全身,是细胞开关的信号部分。 空格处作定 语,修饰名词 part,此处表主动,用动名词 signaling 作定语...
31. Vitamin B enables the body tofull use of the food taken in.A)makeB)reachC) putD)bring 相关知识点: 试题来源: 解析 31.A【解析】考查固定搭配。句意为:维生素B使身体能够充分利用吸收的食物。根据固定搭配 make full use of(充分利用)可知A项 make为正确答案。
Vitamin D is found throughout the body and serves as a signalling/signaling(signal) part to turn cells on and off. 相关知识点: 试题来源: 解析 答案:signalling/signaling.所给词signal用作动词,意思是"发信号";设空处作定语修饰名词part,表示所修饰名词的用途或目的,应用动词的ing形式,signal的ing...
Vitamin D is a ___by the body after exposure to sunshine.相关知识点: 试题来源: 解析 根据句意,维生素D暴露在阳光下后被身体吸收。结合首字母,考虑absorb"吸收",与Vitamin D是动宾关系,要用一般现在时的被动语态。故填:absorbed。反馈 收藏
calcium,producing it D. calciumand produces E. calciumand produces it 相关知识点: 试题来源: 解析 A 答案:A 类型:句子结构。 解析:句子的主语是维他命D,which引导定语从句做主语的同位语,那么之后必然有句子的谓语动词。因此A选项是正确的。B中and使用错误,and并列成分并不是两个动词。C选项导致主句无...
Does chronic sunscreen use reduce vitamin D to insufficient levels? Exposure to ultraviolet B radiation in sunlight provides the mechanism for more than 90% of the vitamin D production in most individuals. Concern has been ... M Norval,HC Wulf - 《British Journal of Dermatology》 被引量: 179...
Vitamin D, any of a group of fat-soluble vitamins that plays a role in calcium metabolism in animals. The primary source of vitamin D is sunlight exposure, whereby ultraviolet radiation converts sterols present in the skin to vitamin D. Learn more about
One of the main functions of vitamin D in the body is to increase intestinal calcium absorption and thereby supporting bone density. A combination of vitamin D and calcium supplements to nursing home residents has shown to increase bone density and reduce fracture risk [6, 9]. Therefore, since...