BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 44, Problem 3U
Second messengers are activated in response to
a. steroid hormones.
b. thyroxine.
c. hydrophilic hormones.
d. All of the choices are correct.
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The actions of lipid-soluble hormones include
a. activation or inhibition of enzymatic pathways.
b. binding with a hormone-responsive element.
c. muscle contraction or relaxation. d. stimulation of cellular secretions.
Which of the following statements about polypeptide hormones is false?a. They bind to receptors located on the cell membrane.b. Most of them are lipophilic.c. They are the most abundant class of hormones.d. They normally activate second messengers.e. They bind noncovalently to receptors.
Which one of the following best describes the characteristics of an autocrine hormone?
Select one:
а.
Acts on same cells to amplify signals
b. Released into bloodstream
С.
Acts on target cells far away from site of synthesis
d.
Acts on neighboring cells
e. Diffuses across the synaptic junction
Chapter 44 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 44.1 - Prob. 1LOCh. 44.1 - Prob. 2LOCh. 44.1 - Prob. 3LOCh. 44.2 - Prob. 1LOCh. 44.2 - Prob. 2LOCh. 44.2 - Prob. 3LOCh. 44.3 - Prob. 1LOCh. 44.3 - Describe the connections between the hypothalamus,...Ch. 44.3 - Prob. 3LOCh. 44.4 - Prob. 1LO
Ch. 44.4 - Describe the components of Ca2+ homeostasis.Ch. 44.4 - Prob. 3LOCh. 44.5 - Prob. 1LOCh. 44.5 - Prob. 2LOCh. 44.5 - Prob. 3LOCh. 44 - Prob. 1DACh. 44 - Prob. 1IQCh. 44 - Which of the following best describes hormones? a....Ch. 44 - Steroid hormones a. can diffuse through the...Ch. 44 - Second messengers are activated in response to a....Ch. 44 - Which of the following is true about lipophilic...Ch. 44 - An organ is classified as part of the endocrine...Ch. 44 - Hormones released from the pituitary gland have...Ch. 44 - Prob. 7UCh. 44 - You think one of your teammates is using anabolic...Ch. 44 - Your Uncle Sal likes to party. When he goes out...Ch. 44 - Prob. 3ACh. 44 - Prob. 4ACh. 44 - Prob. 5ACh. 44 - You experience a longer period than normal between...Ch. 44 - Mild vitamin D deficiency can lead to...Ch. 44 - How can blocking hormone production decrease...Ch. 44 - Suppose that two different organs, such as the...Ch. 44 - Many physiological parameters, such as blood Ca2+...
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- 1. Norepinephrine and epinephrine act in a permissive manner to thyroid hormone. This means... A. Norepinephrine and epinephrine bind to TH receptors B. Norepinephrine and epinephrine antagonize the action of TH C. Norepinephrine and epinephrine upregulate the number of TH receptors, strengthening the effects of TH 2. Which mechanism of action is NOT common to both cortisol and growth hormone? A. Muscle building B. Mobilizing fatty acidsarrow_forwardWhich of the following are components of intracellular enzyme cascades initiated by water-soluble hormones? a. G proteins . cAMP molecules c. protein kinase enzymes d. All of these are correct.arrow_forwardThe immediate effect of a steroid hormone on a cell is the: a. formation of cAMP. b. increase of enzyme-controlled intracellular reactions. c. transcription of RNA. d. activation of adenyl cyclase.arrow_forward
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- Which of the following statements about dopamine is INCORRECT? a. Its generation is catalyzed by dihydroxyphenylalanine decarboxylase. b. It is an endogenous catecholamine. c. It is derived from tyrosine. d. It directly requires BH4 in its synthesisarrow_forwardAll of the following occur during a stress response EXCEPT a. the parasympathetic branch of the autonomic nervous system is activated. b. the adrenal gland releases steroid hormones. c. an increased output of the heart increases blood flow to the muscles. d. glucose is made available for energy, due to the effects of epinephrine. Which of the following is NOT true of axons? a. They can vary greatly in length b. Under normal circumstances, they carry information toward the soma c. Some of them are covered with myelin sheaths d. They release chemicals that cross the synapsearrow_forwardWhich of the following statements comparing the endocrine system and the nervous system is false? a. The endocrine system can reach almost all living cells. b. The endocrine system and the nervous system never interact with each other. c. Nervous system control is faster than endocrine control. d. Both systems can be considered as systems of communication.arrow_forward
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