Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Textbook Question
Chapter 45, Problem 7TYU
The relationship between the insect hormones ecdysteroid and PTTH is an example of
(A) an interaction of the endocrine and nervous systems.
(B) homeostasis achieved by positive feedback.
(C) homeostasis maintained by antagonistic hormones.
(D) competitive inhibition of a hormone receptor.
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Which of the following statements about endocrine signalling hormones is TRUE?
a) They are only soluble in lipids.
b) In vertebrates, they are only transported through the blood circulatory system.
c) They include a group of chemicals known as pheromones.
d) Each hormone can react with only one specific receptor type.
e) They are also involved in synaptic signalling.
Which of the following observations can be explained by the properties of hormone receptors?
a) A certain tissue can react to more than one hormone
b) A certain hormone affects only a specific tissue, not all tissues
c) Some tissues react very quickly to a certain hormone, other tissues take many hours to react to the same hormone
1) Gross Anatomy and Basic Function of the Endocrine Glands
a)Both the endocrine and nervous systems are major regulating systems of the body; however, the nervous system has been compared to a text message, and the endocrine system to mailing a letter. Briefly explain this comparison.
b) Chemically, hormones belong chiefly to two molecular groups, the___ and the___
c) If hormones travel in the bloodstream, why don't all tissues respond to all hormones?
Chapter 45 Solutions
Campbell Biology (10th Edition)
Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - Prob. 2CCCh. 45.1 - Prob. 3CCCh. 45.2 - What are the roles of oxytocin and prolactin in...Ch. 45.2 - How do the two fused glands of the pituitary gland...Ch. 45.2 - WHAT IF? 2192 Propose an explanation for why...Ch. 45.2 - what if? Lab tests of two patients, each...Ch. 45.3 - If a hormone pathway produces a transient response...Ch. 45.3 - Prob. 2CCCh. 45.3 - Prob. 3CC
Ch. 45 - Prob. 45.1CRCh. 45 - Prob. 45.2CRCh. 45 - Prob. 45.3CRCh. 45 - Which of the following is not an accurate...Ch. 45 - Prob. 2TYUCh. 45 - Growth factors are local regulators that (A) are...Ch. 45 - Prob. 4TYUCh. 45 - Prob. 5TYUCh. 45 - Which of the following is the most likely...Ch. 45 - The relationship between the insect hormones...Ch. 45 - DRAW IT In mammals, milk production by mammary...Ch. 45 - Prob. 9TYUCh. 45 - Prob. 10TYUCh. 45 - Level 3: Synthesis/Evaluation 11. WRITE ABOUT A...Ch. 45 - Prob. 12TYU
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- Which of the following is not an accuratestatement?(A) Hormones are chemical messengers that travelto target cells through the circulatory system.(B) Hormones often regulate homeostasisthrough antagonistic functions.(C) Hormones of the same chemical class usually have thesame function.(D) Hormones are often regulated through feedback loopsarrow_forwardPlease give the answers onlyarrow_forwardVirtually all of the protein or amino acid-based hormones exert their effects through an intracellular O a) ions O b) deactivators c) receptors O d) second messengers Ston sharing Hidearrow_forward
- A new hormone is discovered. Analysis suggests that it is synthesized on demand and has a long half-life in the wwww www. bloodstream. It seems to activate gene transcription in its target cells, though no cell surface receptors can be identified. Which type of hormone is this most likely to be? A) Steroid hormone B) Catecholamine C) Thyroid hormone D) Peptide hormonearrow_forwardWhich of the following is not a true statement? A.) steroid and thyroid hormone signaling would be impaired if the plasma level of carrier proteins is not optimal. B.) Steroid and thyroid hormone-receptor complexes form dimers when they bind to the hormone-response elements on DNA C.) Epinephrine uses the adenylate cyclase and the phospholipase C second messenger systems D.) signaling by a peptide hormone would be impaired if a second messenger system is not functional in the target cell E.) signaling by a steroid hormone would be hindered if the adenylated cyclase second messenger system is not functional in the target cell.arrow_forwardSteroid hormones ... a) ... transmits its effects mainly by binding to membrane receptors. b) ... are water soluble. c) ... conveys its effects mainly through so-called second messengers. d) ... is transported in the blood by means of carrier protein.arrow_forward
- Which of the following is a true statement? A.) the hormone FSH requires a second messenger system to elicit a cellular response B.) prohormones are modified before they become active C.) the combined effects of two hormones would be greater than their individual effects if they synergize by additivity D.) a hormone can influence its own action on the target cell through priming E.) all of the abovearrow_forwardA steroid hormone approaches its target cell. Which of the following happens first? a)The hormone enters the nucleus. b)The hormone passes through the cell membrane. c)The hormone and its receptor bind to the cell's DNA. d) The hormone and its receptor enter the cell's nucleus.arrow_forwardWhich of these assertions about hormones is not accurate? Which of these assertions about hormones is not accurate? A.)Hormones produced by the hypothalamus are considered neurohormones. B.) Cortisol is released in response to the release of ACTH from the pituitary. C.) Hormonal changes during puberty and pregnancy are forms of endocrine disruption. D.) Growth and metamorphosis are controlled by hormones.arrow_forward
- Identify molecule (1) in the pathway of hormonal regulation illustrated below: (A) ion channel (B) G protein-coupled receptor (C) tyrosine kinase receptor (D) cytoplasmic/nuclear receptorarrow_forwardWhich of the following statements about the half-life of hormones is correct? a) Hormones with a short half-life are present in relatively constant amounts in the blood b) Hormones with a short half-life regulate slow functions c) Fat-soluble hormones usually have a relatively long half-life d) Fat-soluble hormone is rapidly broken down by enzymes in the blood circulation e) Water-soluble hormones usually bind to plasma proteins (transport proteins)arrow_forwardWhich of the following types of molecules can be a hormone? a) Phospholipids b) Fatty acid derivatives c) Proteins d) Nucleic acid derivatives e) Peptidesarrow_forward
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