Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Question
Chapter 25, Problem 11SA
Summary Introduction
To review:
- The general effects of endocrine disrupters.
- Why even small quantities of these substances can be dangerous.
Introduction:
Many chemicals are capable of disrupting the function of hormones.
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Chapter 25 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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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.arrow_forwardwhy are there scattered endocrine cells in most organs?arrow_forwardHow could the origin of endocrine control systems lie in ordinary cellular events? How might the earliest multicellular organisms have evolved some sort of endocrine coordination?arrow_forward
- The effect of hormones on their target is always a linear relationship of its concentration. a) This is incorrect. There is no measurable relationship between the concentration of a hormone and its effect on the target. b) This is true. Higher concentration always leads to stronger effect on their targets. c) This is incorrect. Some hormones have non-linear dose effects. d) This is true. Lower concentration always leads to weaker effects on their targets.arrow_forwardWhat general features make a chemical compound a hormone, and how do hormones achieve specificity for certain kinds of target cell?arrow_forwardThe ability of a specific tissue or organ to respond to the presence of a hormone is dependent on a) the location of the tissue or organ with respect to the circulatory path O b) the membrane potential of the cells of the target organ c) the presence of the appropriate receptors on the cells of the target tissue or organarrow_forward
- Why is it important for hormones to act at low concentrations and be degraded quickly?arrow_forwardWhat are the broad characteristics that distinguish a chemical substance from a hormone, and how can hormones attain specificity for certain types of target cells?arrow_forwardWhat are the three major classes of hormones on the basis of chemical structure? How can chemicals affect endocrine systems?arrow_forward
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