NUTRITION
LIPIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Steroids are a type of hormone. Polar materials require a transport protein while nonpolar materials can pass easily through the plasma membrane. Which of the following describes how steroid hormones enter the cell?
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Steroids are polar so they pass easily through the plasma membrane.
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Steroids are nonpolar so they pass easily through the plasma membrane.
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Steroids are polar so they require a transport protein to pass through the plasma membrane.
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Steroids are nonpolar so they require a transport protein to pass through the plasma membrane.
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Explanation:
Detailed explanation-1: -Steroid hormones are lipophilic and thus, are usually transported in the plasma bound to a serum binding protein, such as albumin-or sex hormone–binding globulin (SHBG).
Detailed explanation-2: -In the classic genomic pathway of steroid action, steroids enter a cell through the plasma membrane, bind to specific steroid receptors and the complex transported into the nucleus where it regulates gene transcription (1).
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