Some types of fibre can bind and impair the absorption of what nutrients?

Question

BlackTom AI · Accepted Answer

Briefly restating the question: which nutrients can be bound by certain fibres, impairing their absorption?

Option a: Negatively charged minerals that are divalent (-2) or trivalent (-3). In reality, the minerals most affected by fibre binding are positively charged metal ions (such as Ca2+, Fe2+/3+, Zn2+), not negatively charged minerals. The charge and chemical form described in this option do not align with the common mechanism of fibre–mineral interactions, making this choice inaccurate.

Option b: Monosaccharides and disaccharides. Dietary fibre’s binding and impairment of absorption is not typically described for simple sugars themselves. Fibers influence mineral and some vitamin absorption more than they affect the uptake of basic carbohydrates, so this option misidentifies the primary nutrients involved and is therefore incorrect.

Option c: Positively charged minerals that are divalent (+2) or trivalent (+3). This aligns with the known mechanism whereby certain fibres (and associated compounds) can chelate or bind divalent and trivalent minerals such as calcium (Ca2+), iron (Fe2+/3+), magnesium (Mg2+), and zinc (Zn2+), reducing their absorption in the gut. The description matches the minerals affected by fibre interactions and is the correct choice.

Option d: Water-soluble vitamins. While some nutrients can have altered absorption under various conditions, fibre’s binding effects are most classically described with divalent/trivalent minerals rather than water-soluble vitamins. This option does not accurately reflect the primary nutrient groups impacted by fibre binding, making it incorrect.

Some types of fibre can bind and impair the absorption of what nutrients?单项选择题

类似问题

High fibre diets can impair the absorption of trace minerals.

Phytates in plant foods can _____[Fill in the blank]

How did Egyptian culture and governance change during the Ptolemaic period compared to the pharaonic period?

Name the Supreme Court decision that removed financial constraints on PACs.

Political scientists Joshua Kalla and David Broockman find that senior policy makers made themselves available to _____ between three and four times more often than they did to constituents.

Name the political scientist who argues that parties are designed to serve the needs of ambitious politicians (namely candidates and officeholders).

Name the political scientist who said this famous quote about the problems of pluralism: “The flaw in the pluralist heaven is that the heavenly choir sings with a strong upper-class accent.”

What is the name of the third party candidate in 2000 who was not allowed to participate in the presidential debates? Hint: We watched a video clip with him in class.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单