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Rhodopsin

释义 Definition

视紫红质：一种存在于视网膜杆状细胞中的感光蛋白，负责在弱光条件下感知光线并启动视觉信号传导。（在强光下会“漂白”并需要再生；相关但不同的蛋白还参与色觉。）

发音 Pronunciation

/rodpsn/

例句 Examples

Rhodopsin helps us see in dim light.
视紫红质帮助我们在昏暗光线下看见东西。

When rhodopsin absorbs a photon, it triggers a chemical change that starts a nerve signal to the brain.
当视紫红质吸收一个光子时，会引发化学变化，从而启动传向大脑的神经信号。

词源 Etymology

rhodopsin 来自希腊语词根：*rhodo-*（“玫瑰色、红色”）+ opsin（“视觉、看”相关的蛋白名词成分），字面含义可理解为“红色的视觉蛋白”，对应其在视网膜中呈现的紫红色外观与其感光功能。

相关词 Related Words

文学与作品 Literary Works

科普/非虚构：Richard Dawkins《The Blind Watchmaker》（《盲眼钟表匠》）中在讨论眼睛与视觉演化时常提及包括视紫红质在内的视觉分子机制。
科普/非虚构：Steven Pinker《How the Mind Works》（《心智探奇》）涉及视觉系统的基础原理时可能引用到视网膜与感光蛋白（如 rhodopsin）的相关概念。

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