CAMPBELL BIOLOGY,VOL.II >CUSTOM<
17th Edition
ISBN: 9781323803677
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 45, Problem 1TYU
Which of the following is not an accurate statement?
(A) Hormones are chemical messengers that travel to target cells through the circulatory system.
(B) Hormones often regulate homeostasis through antagonistic functions.
(C) Hormones of the same chemical class usually have the same function.
(D) Hormones are often regulated through feedback loops.
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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 loops
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,VOL.II >CUSTOM<
Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - What type of gland would you expect to secrete...Ch. 45.1 - WHAT IF? Predict what would happen if you...Ch. 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 - MAKE CONNECTIONS What forms of signaling activate...Ch. 45 - Which major endocrine organs described in Figure...Ch. 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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- Steroid 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_forwardThe 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.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
- What do steroid and peptide hormones typically have in common? (A) their solubility in cell membranes (B) their requirement for travel through the bloodstream (C) the location of their receptors (D) their reliance on signal transduction in the cellarrow_forwardWhich 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_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
- Which of the statements is/are incorrect for hormones? 1) Hormones are non-nutrient chemicals serving as intercellular messengers. 2) Hormones are molecules of low molecular weight and are produced in traces. 3) Hormones give energy and also effect metabolism and growth activities of target cells. 4) Many hormones are produced in inactive form.arrow_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 hormones interact with intracellular receptors? a) Testosterone b) Prolactin c) thyroid hormone (thyroid hormone) d) Estrogen e) Glucagon f) Vitamin Darrow_forward
- Endocrine downregulation ... a) ... occurs in target cells that respond to hormones that are present in constant amounts in the blood. b) ... leads to the increased sensitivity of the target organ to the hormone. c) ... leads to a decrease in the number of receptors in the target cell. d)... occurs in part due to increased receptor synthesis in the target cell.arrow_forwardWhich of the following hormones activates cytoplasmic and nuclear receptors? a.) Epinephrine b.) Dopamine c.) Cortisol d.) Norepinephrinearrow_forwardMost hormones are ________. Question options: A) able to diffuse through the plasma membrane of their target cells B) classified as steroids C) controlled by blood levels of ions or nutrients D) regulated by a positive feedback mechanism E) released upon stimulation by other hormonesarrow_forward
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