Chapter_45 - Biology, 7e (Campbell) Chapter 45: Hormones...

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(Campbell) Chapter 45: Hormones and the Endocrine System 1) Which of the following statements about hormones is incorrect ? A) They are produced by endocrine glands. B) They are modified amino acids, peptides, or steroid molecules. C) They are carried by the circulatory system. D) They are used to communicate between different organisms. E) They elicit specific biological responses from target cells. 2) Which of the following is (are) true? A) Hormones regulate cellular functions, and negative feedback regulates hormone levels. B) The circulating level of a hormone is held constant through a series of positive feedback loops. C) Both lipid-soluble hormones and water-soluble hormones bind to intracellular protein receptors. D) Only A and D are true. E) A, B, and C are true. 3) What do nitric oxide and epinephrine have in common? A) They both function as neurotransmitters. B) They both function as hormones. C) They are both involved in the "rest and digest" response. D) Only A and B are correct. E) A, B, and C are correct. 4) A cell that contains proteins enabling a hormone to selectively bind to its plasma membrane is called a(n) A) secretory cell. B) plasma cell. C) endocrine cell. D) target cell. E) regulatory cell. 5) Only certain cells in the body are target cells for the steroid hormone aldosterone. Which of the following is the best explanation for why these are the only cells that respond to this hormone? A) Only target cells are exposed to aldosterone. B) Only target cells contain receptors for aldosterone. C) Aldosterone is unable to enter nontarget cells. D) Nontarget cells destroy aldosterone before it can produce its effect. E) Nontarget cells convert aldosterone to a hormone to which they do respond. 6) Where is it likely that you will find the receptor molecules for chemical signals? A) in the nucleus of target cells B) in the interstitial fluid surrounding target cells C) in the cytoplasm of target cells D) in the cell membrane of target cells E) associated with the DNA of target cells 7) Hormones from the anterior pituitary include all of the following except A) prolactin. B) oxytocin.
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This note was uploaded on 02/27/2009 for the course SC 424111 taught by Professor Various during the Winter '08 term at Kasetsart University.

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Chapter_45 - Biology, 7e (Campbell) Chapter 45: Hormones...

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