Which of the following statements about hormones is true?Group of answer choicesAll hormones contain calcium ions.Hormones are derived from amino acids and steroids.None of these statements are trueExocrine glands produce hormonesHormones are always non-specific; i.e. they always target every cell in the body.
Question
Which of the following statements about hormones is true?Group of answer choicesAll hormones contain calcium ions.Hormones are derived from amino acids and steroids.None of these statements are trueExocrine glands produce hormonesHormones are always non-specific; i.e. they always target every cell in the body.
Solution
The correct statement about hormones is: "Hormones are derived from amino acids and steroids."
Here's why:
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Not all hormones contain calcium ions. Hormones can be made from a variety of substances, including proteins, steroids, and amino acids.
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Hormones are indeed derived from amino acids and steroids. For example, adrenaline is an amino acid-derived hormone, while cortisol is a steroid hormone.
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The statement "None of these statements are true" is incorrect because the statement "Hormones are derived from amino acids and steroids" is true.
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Exocrine glands do not produce hormones. Instead, they release their secretions into ducts. Endocrine glands are the ones that produce and release hormones directly into the bloodstream.
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Hormones are not always non-specific. In fact, they often target specific cells or tissues in the body. For example, insulin specifically targets cells that can take up glucose, such as muscle cells and fat cells.
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