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ch18 - Exam Name MULTIPLE CHOICE. Choose the one...

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Exam Name___________________________________ MULTIPLE CHOICE.Choose the one alternative that best completes the statement or answers the question. 1)All of the following are true of the nervous systemexceptthat it does not1) A)function independently of the endocrine system. B)respond rapidly to stimuli. C)respond with motor output. D)communicate by the release of neurotransmitters. E)respond specifically to stimuli.
2) Endocrine cells 2)
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3) ________ are chemical messengers that are released by cells and transported in the bloodstream to alter the activities of specific cells in other tissues.3)
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4)A hormone might4)
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5) Hormones known as "catecholamines" are 5) A)derivatives of reproductive glands. B)peptides. C)lipids. D)steroids. E)derivatives of the amino acid tyrosine.
6)Peptide hormones are6)
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1
7)A kinase is an enzyme that performs7)
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8) An activated G protein can trigger 8)
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9)Calcium ions serve as messengers, often in combination with the intracellular protein 9) A)calcitonin. B)calcitriol. C)calmodulin. D)calcitropin. E)calcium-binding globulin.
10) Hormones can operate on the ________ level of organization. 10)
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11)Why is it that steroid hormones use receptors inside of target cells, whereas protein, peptide, andamino acid hormones do not? 11)
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