Multiple Choice
Which hormone increases blood calcium levels by stimulating osteoclast activity in the skeletal system?
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43. Endocrine System
Endocrine System
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Which is an accurate statement regarding the difference between steroid and nonsteroid hormones?
A
Nonsteroid hormones can pass through cell membranes; most steroid hormones cannot.
B
Nonsteroid hormones attach to receptors in the cytoplasm; steroid hormones attach to membrane-bound receptors.
C
Steroid hormones inactivate genes; nonsteroid hormones directly activate genes.
D
Steroid hormones are produced by endocrine glands; nonsteroid hormones are produced by nervous tissue.
E
Steroid hormones are lipids; nonsteroid hormones are made from one or more amino acids.
Verified step by step guidance1
Understand the basic structure of steroid and nonsteroid hormones. Steroid hormones are derived from cholesterol and are lipid-soluble, allowing them to pass through cell membranes easily.
Recognize that nonsteroid hormones, also known as peptide or protein hormones, are composed of amino acids and are generally not lipid-soluble, meaning they cannot pass through the cell membrane directly.
Identify the mechanism of action for each type of hormone. Steroid hormones typically enter the cell and bind to intracellular receptors, often in the cytoplasm or nucleus, to directly influence gene expression.
Understand that nonsteroid hormones bind to receptors on the cell surface, which then triggers a secondary messenger pathway inside the cell to exert their effects.
Conclude that the accurate statement is that steroid hormones are lipids, allowing them to pass through cell membranes, while nonsteroid hormones are made from one or more amino acids and act through membrane-bound receptors.
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