Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 11, Problem 1TYK
Summary Introduction
Introduction: Local regulators and hormones are signaling molecules that regulate various
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what happens to a water souble hormone after it binds to a receptor on the target cell? select all that apply
A. the hormone unbinds the receptor or pops back off
B. the hormone is broken down by an enzyme
C. the hormone is transported into the cell where it is destroyed by enzymes
d. the hormones is transported into the cell where it promotes transcription.
The action of steroid hormones is different from that of peptide hormones becausea. peptide hormones must enter the cell to begin action, whereas steroid hormones must begin action on the external surface of the cell membrane.b. steroid hormones must enter the cell to begin action, whereas peptide hormones must begin action on the external surface of the cell membrane.c. peptide hormones produce a hormone receptor complex that works directly on the DNA, whereas steroid hormones cause the release of a secondary messenger that triggers enzymes.d. None of these answers is correct.
A membrane-bound proteins that
selectively bind a specific hormone
is called that hormone's
Select one:
O A. marker
O B. receptor
O C. transducer
O D. regulator
Chapter 11 Solutions
Study Guide for Campbell Biology
Ch. 11 - How do plant hormones (often called plant growth...Ch. 11 - Prob. 2IQCh. 11 - Label the parts in the following diagram of an...Ch. 11 - Prob. 4IQCh. 11 - a. What does a protein kinase do? b. What is a...Ch. 11 - Prob. 6IQCh. 11 - Prob. 7IQCh. 11 - Prob. 8IQCh. 11 - a. What can one conclude from the fact that the...Ch. 11 - Prob. 1SYK
Ch. 11 - Briefly describe the three stages of cell...Ch. 11 - Some signaling pathways alter a proteins activity;...Ch. 11 - Prob. 4SYKCh. 11 - Prob. 1TYKCh. 11 - Steroid hormones a. bind to cell-surface...Ch. 11 - Prob. 3TYKCh. 11 - Prob. 4TYKCh. 11 - Which of the following is a key difference between...Ch. 11 - Many human diseases (including bacterial...Ch. 11 - Prob. 7TYKCh. 11 - If a protein is activated by the addition of a...Ch. 11 - Prob. 9TYKCh. 11 - Prob. 10TYKCh. 11 - From studying the effects of epinephrine on liver...Ch. 11 - You are a Ca2+ ion in a typical animal cell. Where...Ch. 11 - Which of the following molecules is incorrectly...Ch. 11 - Prob. 14TYKCh. 11 - Prob. 15TYK
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- What is the principal difference of endocrine system from other signaling systems? Select one: A. Endocrine signals diffuse to neighboring target cells. B. Endocrine signals produce self-activation of the secreting cells. C. Endocrine system uses cell-cell contact to transduce signals. D. Endocrine signals are delivered by blood. E. Endocrine signals always generate faster responses in target cells.arrow_forwardA hormone differs from a neurotransmitter in thata. hormones act extracellularly, whereas neurotransmitters act withinthe cell that synthesized them.b. hormones are released only by neurons, whereas neurotransmittersare released by many different types of cells.c. hormones cause only fast responses (seconds or less) to stimuli,whereas neurotransmitters cause slow responses (minutes to hours)to stimuli.d. hormones affect only epithelial cells, whereas neurotransmittersaffect only muscle cells.e. hormones are released into the bloodstream and can activate manycells in many parts of the body, whereas neurotransmitters arereleased by neurons and affect adjacent cells.arrow_forwardWhen a hormone binds to a nuclear receptora. DNA produces mRNA.b. G proteins are activated.c. the hormone-receptor complex causes ion channels to open or close.d. the cell’s response is faster than when a hormone binds to a membranebound receptor.e. the hormone is usually a large, water-soluble moleculearrow_forward
- what happens when an agonist, instead of the endogenous (natural) hormone binds to the hormone recepters of a target. A. an antagonist is necessary to remove the agonist B. the agonist blockd any response in the target cell C. the cell responds by producing its own hormone D. transcription factors are blocked from binding to the promotor region E. the agonist has the same effect as the endogenous hormone.arrow_forwardWhen a catecholamine or peptide hormone binds to receptors on the surface of a cell, A. The hormone is transported to the nucleus where it alters the activity of dna. B. The cell membrane becomes less permeable. C. The cell becomes inactive. D. A second messenger appears in the cytoplasm.arrow_forwardWhat features are remarkable about steroid receptors? (Select all that apply) A. Steroid receptors are localized in the cytoplasm B. steroid receptors are localized in the plasma membrane C. steroid receptors can translocate to the nucleus D. steroid receptors represent the beginning of a signaling Cascade E. steroid receptors can also function as transcription factorsarrow_forward
- Thyroid hormone receptor (TR) regulates growth, development, and differentiation of mammals. TR contains both a domain that binds to T3, the thyroid hormone, and a separate domain that binds to DNA. Which of the following BEST explains how TR signals? A. T3 binds to TR at the cell membrane, which then releases second messengers to regulate gene expression. B. T3 binds to DNA at the cell membrane, which then releases second messengers to regulate gene expression. C. T3 diffuses through the cell membrane to bind to TR, which then binds to DNA to regulate gene expression. D. T3 diffuses through the cell membrane to bind to DNA, which then binds to TR to regulate gene expression.arrow_forwardSecond messengers amplify a hormone’s signal bya. increasing its production.b. stabilizing the hormone’s structure.c. triggering an enzyme cascade.d. activating interfering mRNA.arrow_forwardWhich one of the following best describes the characteristics of an autocrine hormone? Select one: a. Released into bloodstream b. Acts on neighboring cells c. Acts on same cells to amplify signals d. Acts on target cells far away from site of synthesis e. Diffuses across the synaptic junctionarrow_forward
- John is told that he has a hormone receptor problem and his cells are not responsive to hormone stimulation. Which of the following is a possible reason for his problem? Select one: A. He has an ectopic tumor. B. He has hypersensitivity to the hormone. C. He has a receptor that has been overstimulated. D. He has too many receptors for the hormone. E. He has antibodies that block the function of the hormone receptor. O O O Oarrow_forwardSteroid hormones a. can diffuse through the membrane without a carrier. b. have a direct effect on gene expression. c. bind to membrane receptors. d. Both a and b are correct.arrow_forwardWhat hormone is described? It diffuses easily into target cells and binds to a receptor near the nucleus, subsequently altering both gene expression and cellular metabolism. This hormone has more chemical similarities to a hormone that typically binds to receptors on the plasma membrane than to a hormone that diffuses into the target cells. a.Amine hormoneb. Glucocorticoidc. Steroid Hormoned. Peptide Hormonearrow_forward
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