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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Textbook Question
Chapter 45, Problem 4TYK
The activation of helper T cells during an immune response by cytokines released by antigen- presenting cells and helper T cells themselves is an example of
- a. endocrine signaling.
- b. autocrine signaling.
- c. paracrine signaling.
- d. both band c.
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example of endogenous substances that mediate or transmit noceiptive signaling include.
A. substance P, CGRP, bradykinin B.substance P, CGRP,enkaphin C. morphine, substance P, bradykhin D.endorphins, substance P, CGRP
Hydrophobic signaling molecules act by
a. binding to plasma proteins
b. starting second messenger systems
c. binding to receptors inside the cell
d. starting action potentials
Cell signaling systems:
A. autocrine B. paracrine C. endocrine D. none among the given
Which will have messenger molecules reach their target cells through the bloodstream?
A
B
C
D
Chapter 45 Solutions
Study Guide for Campbell Biology
Ch. 45 - Label the parts of the following diagrams,...Ch. 45 - Compare negative and positive feedback in the...Ch. 45 - What is a tropic hormone? Give some examples.Ch. 45 - The thyroid gland produces two hormones, thyroxine...Ch. 45 - Prob. 5IQCh. 45 - Prob. 1SYKCh. 45 - What is a hormone cascade pathway? Describe how...Ch. 45 - Prob. 1TYKMCh. 45 - Prob. 2TYKMCh. 45 - Prob. 3TYKM
Ch. 45 - Prob. 4TYKMCh. 45 - Prob. 5TYKMCh. 45 - Prob. 6TYKMCh. 45 - Prob. 7TYKMCh. 45 - Prob. 8TYKMCh. 45 - Prob. 9TYKMCh. 45 - Prob. 10TYKMCh. 45 - Prob. 1TYKCh. 45 - Prob. 2TYKCh. 45 - Prob. 3TYKCh. 45 - The activation of helper T cells during an immune...Ch. 45 - Prob. 5TYKCh. 45 - Prob. 6TYKCh. 45 - Which of the following hormones is secreted by the...Ch. 45 - Prob. 8TYKCh. 45 - Prob. 9TYKCh. 45 - Prob. 10TYKCh. 45 - Prob. 11TYKCh. 45 - The anterior pituitary a. stores and releases...Ch. 45 - Prob. 13TYKCh. 45 - Prob. 14TYKCh. 45 - Prob. 15TYKCh. 45 - Prob. 16TYKCh. 45 - Prob. 17TYKCh. 45 - Prob. 18TYKCh. 45 - Prob. 19TYKCh. 45 - Prob. 20TYK
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- Intracellular receptors bind to signaling molecules that are A. anionic. B. cationic. C. nonpolar. D. polypeptides.arrow_forwardA cell has epinephrine receptors, yet is unable to respond to epinephrine signaling. One possible reason is: A. The cell has no DNA. B. The cell is missing a functional G-protein or adenylyl cyclase. C. All of the epinephrine receptors are on the cell’s surface. (They’re supposed to be in the cytoplasm!) D. Both A and C.arrow_forwardCell signaling systems: A. autocrine B. paracrine C. endocrine D. none among the given Which will have cell receptors on its own cell's surface that respond to the messenger? A B C Darrow_forward
- . Hedgehog, the signal, does not travel very far to bind to its receptor, Patched, on target cells.Therefore, target cells that are closer to the signaling cell receive a stronger signal. What modeof signaling does this describe?A. EndocrineB. Paracrine/AutocrineC. SynapticD. Contact-dependentExplain:arrow_forwardYou are seeking a new anti-inflammatory drug to inhibit local responses to stress and injury. Which of the following activities would you look for in a potential anti-inflammatory agent? A It should function as a dominant-negative receptor for pro-inflammatory cytokines. It should be an agonist of a pro-inflammatory cytokine. C It should compete with the pro-inflammatory cytokine for the binding to its receptor. D It should function as a constitutively active receptor for pro-inflammatory cytokines. E It should facilitate the production of second messengers in response to a pro-inflammatory cytokine.arrow_forwardIn a clinical study, it was found that copaiba essential oil positively regulated multiple signaling pathways in neuronal cells. These included the following signaling pathways which regulate neuronal metabolism, proliferation and immunity: (Select all that apply.) Choose at least one answer. a. AMPK b. pI3K/Akt/mTOR c. MAPK d. JAK/STATarrow_forward
- EGF signals by binding to cell surface EGF receptors. Which of these observations, if true, would BEST explain EGF’s mechanism of action? A. EGF is hydrophilic and can easily diffuse through the cell membrane B. EGF is hydrophobic and can easily diffuse through the cell membrane C. EGF is hydrophilic and cannot diffuse through the cell membrane D. EGF is hydrophobic and cannot diffuse through the cell membranearrow_forwardA scientist observes a mutation in the transmembrane region of EGFR that eliminates its ability to be stabilized by binding interactions during dimerization after ligand binding. Which hypothesis regarding the effect of this mutation on EGF signaling is most likely to be correct? a. EGF signaling cascades would be active for longer in the cell. b. EGF signaling cascades would be active for a shorter period of time in the cell. c. EGF signaling cascades would not occur. d. EGF signaling would be unaffected.arrow_forwardOne advantage chemical signaling has over electrical signaling is thata. reaction to stimuli can happen very quickly.b. although it takes large amounts of chemicals, the chemical signals are efficient.c. chemical signals stick around longer than electrical signals and can be used for slow processes.d. chemical signals are used in response to external and internal stimuli.arrow_forward
- Different cell-types can use the same receptor-type to detect a common hormone, which leads to the abilitiy of that hormone to trigger multiple physiological responses. A. True B. Falsearrow_forwardCells communicate in ways that resemble humancommunication. Decide which of the following forms ofhuman communication are analogous to autocrine, para-crine, endocrine, and synaptic signaling by cells.A. A telephone conversationB. Talking to people at a cocktail partyC. A radio announcementD. Talking to yourselfarrow_forwardWhy must antibody treatments like ZMapp be composed of monoclonal antibodies instead of polyclonal antibodies? a. Therapeutic antibodies must all bind the same epitope. b. Therapeutic antibodies must NOT all bind the same epitope. c. Monoclonal antibodies have much higher binding affinity than polyclonal antibodies. d. Monoclonal antibodies have much lower binding affinity than polyclonal antibodies. e. Monoclonal antibodies can be produced indefinitely; polyclonal antibodies can only be produced for a short time. IS it B? Can you please explainarrow_forward
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Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license