Steroids are small molecules - much smaller than proteins - smaller molecules that tend to be hydrophobic or lipid soluble.

类固醇是小分子物质,比蛋白质小得多,这类小分子是非水溶性的,或者说是脂溶性的

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Many steroid hormones act because they bind to cellulars - to receptors that are deep within the cell, often inside the nucleus.

许多类固醇激素能够起效是因为,其与存在于细胞内部的受体相结合,这类受体通常在细胞核内

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Hormones can be proteins, endocrine hormones can be proteins, meaning they're large molecules that are usually fairly water soluble, or they can be steroids.

激素可以是蛋白,内分泌激素可以是蛋白,这意味着激素是大分子,并且通常是水溶性的,激素也可以是类固醇

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Steroid hormones can operate in a different way because of their structure.

类固醇类激素的作用原理有所不同,这主要是因为它们的结构与蛋白质不同

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Steroid hormones, on the other hand, molecules like testosterone and estrogen, progesterone, the sex steroids that determine sexual characteristics and are important for reproductive function are molecules that are all derived from a similar source.

另一方面,类固醇类激素,像睾丸激素,雌激素,黄体酮这样的分子,性激素决定了性征,它对生殖功能十分重要,这类分子有着相似的来源

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