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Question 1 of 10
1. Question
1 points1 Hormones are classified into biochemical categories
I Steroids
II Proteins/peptides
III AminesCorrect
Hormones are classified into three biochemical categories
• Steroids
• Proteins/peptides
• AminesIncorrect
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Question 2 of 10
2. Question
1 points2 which of the following statements are true about Steroid hormones
I produced by the adrenal cortex, testes, ovaries, and placenta
II Synthesized from cholesterol
III lipid soluble and therefore, cross cell membranes readilyCorrect
Steroid hormones are produced by the adrenal cortex, testes, ovaries, and placenta. Synthesized from cholesterol, these hormones are lipid soluble; therefore, they cross cell membranes readily and bind to receptors found intracellularly. However, because their lipid solubility renders them insoluble in blood, these hormones are transported in the blood bound to proteins.
Incorrect
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Question 3 of 10
3. Question
1 points3 which of the following statements are true about Steroid hormones
I steroid hormones are not typically preformed and stored
II steroid hormones are absorbed easily by the gastrointestinal tract
III may be administered orally.Correct
However, because their lipid solubility renders them insoluble in blood, these hormones are transported in the blood bound to proteins. Furthermore, steroid hormones are not typically preformed and stored for future use within the endocrine gland. Because they are lipid soluble, they could diffuse out of the cells and physiological regulation of their release would not be possible. Finally, steroid hormones are absorbed easily by the gastrointestinal tract and therefore may be administered orally
Incorrect
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Question 4 of 10
4. Question
1 points4 which of the following are derived from amino acids
I Steroids
II Proteins/peptides
III AminesCorrect
Protein/peptide hormones are derived from amino acids. These hormones are preformed and stored for future use in membrane-bound secretory granules.
Incorrect
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Question 5 of 10
5. Question
1 points5 which of the following statements are true about Protein/peptide hormones
I are preformed and stored for future use
II are released by exocytosis
III are water solubleCorrect
Protein/peptide hormones are derived from amino acids. These hormones are preformed and stored for future use in membrane-bound secretory granules. When needed, they are released by exocytosis. Protein/peptide hormones are water soluble, circulate in the blood predominantly in an unbound form, and thus tend to have short half-lives
Incorrect
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Question 6 of 10
6. Question
1 points6insulin is a
I Steroids
II Proteins/peptides
III AminesCorrect
Protein/peptide hormones cannot be administered orally because they would be digested in the gastrointestinal tract. Instead, they are usually administered by injection (e.g., insulin).
Incorrect
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Question 7 of 10
7. Question
1 points7Amine hormones include
I thyroid hormones
II catecholamines
III insulinCorrect
Amine hormones include the thyroid hormones and the catecholamines. The thyroid hormones tend to be biologically similar to the steroid hormones. They are mainly insoluble in the blood and are transported predominantly (>99%) bound to proteins.
Incorrect
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Question 8 of 10
8. Question
1 points8 which of the following can not be administered orally
I Steroids
II Proteins/peptides
III AminesCorrect
Incorrect
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Question 9 of 10
9. Question
1 points9 which of the following statements are true about catecholamines
I soluble in the blood
II relatively short half-life.
III do not cross cell membranesCorrect
The catecholamines are biologically similar to protein/peptide hormones. These hormones are soluble in the blood and are transported in an unbound form. Therefore, the catecholamines have a relatively short half-life. Because these hormones do not cross cell membranes, they bind to receptors on the membrane surface. Finally, the catecholamines are stored intracellularly in secretory granules for future use.
Incorrect
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Question 10 of 10
10. Question
1 points10 Hormones are classified into functional categories like
ITrophic hormones
IINontrophic hormones
III protein hormonesCorrect
Hormones are classified into two functional categories:
• Trophic hormones
• Nontrophic hormonesIncorrect