BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 44.2, Problem 2LO
Summary Introduction
To explain: How signals of peptide hormone pass the membrane.
Introduction: Hormones are types of the signaling molecule that are produced by different endocrine glands and few cells. It is transported to the different target cells, tissues and organs via blood circulation. It regulates and maintains the different physiological and behavioral activities.
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Explain why second messenger systems are needed for peptide hormones.
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Chapter 44 Solutions
BIOLOGY
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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- What is the mechanism of action of a hormone that cyclic AMP as a second messenger?arrow_forwardA __________ is synthesized from amino acids and cannot diffuse across the plasma membrane. a, steroid hormone b. protein hormone c. peptide hormone d. both b and carrow_forwardDescribe the mechanism of hormone response resulting from the binding of a hormone with an intracellular receptor.arrow_forward
- Explain how second messenger molecules work. Why use a second messenger rather than simply relying on a more direct hormone-stimulated transduction mechanism?arrow_forwardList and describe the functions of the three types of proteins involved in transmission of a hormone signal.arrow_forwardDescribe the cellular mechanism of action of peptide hormonesarrow_forward
- Explain how the chemical nature of the plasma membrane acts on the two chemical categories of hormones, and thus the type of response each hormone can induce in a target cell. Be sure to thoroughly describe the two types of cellular responses.arrow_forwardexplain how hormones and other messengers can be effective at extremely low extracellular concentrations?arrow_forwardExplain how a second messenger works. Why use a secondmessenger rather than simply relying on the original hormone to produce the desired effect?arrow_forward
- Describe how a hormone can bind to a membrane-boundreceptor, directly change enzyme activity inside the cell,and increase phosphorylation of intracellular proteins.Give examples.arrow_forwardExplain why polar hormones cannot regulate their target cells without using second messengers. Alsoexplain in a step-by-step manner how cyclic AMP is used as a second messenger in hormone action.arrow_forwardTrace in a stepwise manner the signaling pathway that involves a g-protein receptor leading to the release of intracellular calcium. Specify what class of hormones would be involved in this pathway.arrow_forward
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