BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 9, Problem 2TY
Summary Introduction
Introduction: Cells have various mechanisms to achieve cell to cell communication including direct intercellular signaling, contact dependent signaling, autocrine signaling, paracrine signaling, and endocrine signaling.
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Paracrine signaling is characterized by ligands that are
a. produced by the cell itself.
b. secreted by neighboring cells.
c. present on the plasma membrane of neighboring cells.
d. secreted by distant cells.
Endocrine signals are transmitted more slowly than paracrine signals because ___________. a. the ligands are transported through the bloodstream and travel greater distances b. the target and signaling cells are close together c. the ligands are degraded rapidly d. the ligands don't bind to carrier proteins during transport
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 9 Solutions
BIOLOGY
Ch. 9.1 - Figure 9.1 Response of a yeast cell to glucose....Ch. 9.1 - Prob. 1CSCh. 9.1 - Which type of signal, paracrine or endocrine, is...Ch. 9.1 - Prob. 3CCCh. 9.2 - Prob. 1CSCh. 9.2 - Prob. 2CSCh. 9.2 - Prob. 1CCCh. 9.3 - Prob. 1CSCh. 9.3 - Prob. 1CCCh. 9.3 - Prob. 2CC
Ch. 9.3 - In the case of signaling pathways involving...Ch. 9.5 - Prob. 1EQCh. 9.5 - Prob. 2EQCh. 9.5 - Prob. 3EQCh. 9.5 - Prob. 1CCCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 - The relay protein Ras is part of the EGF pathway...Ch. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 1CQCh. 9 - Conceptual Questions What are the three stages of...Ch. 9 - Prob. 3CQCh. 9 - Prob. 1COQCh. 9 - Prob. 2COQ
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- A biochemist is designing a new drug that will mimic the shape and function of a particular intercellular signaling molecule. Therefore she must produce a molecule that will bind to the receptor protein and... A. produce a cellular response by altering the Na+/K+ pump located near the receptor site. B. induce a change in the receptor molecule shape, which will ultimately prevent a cellular response. C. induce a change in the receptor molecule shape, which will ultimately produce a cellular response. D. induce a change in the phospholipid bilayer that causes a polar reversal allowing the molecules to be endocytose (engulfed).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_forwardChemical signaling that affects neighboring cells is called ________.a. autocrineb. paracrinec. endocrined. neuronarrow_forward
- What type of cell signaling receptor is depicted below a. Cytoplasmic Receptor b. Transmembrane Receptor c. Intracellular Receptor d. Nuclear Receptorarrow_forwardDifferent 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_forwardexample 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, CGRParrow_forward
- Which of the following exert their cell signaling ability proteteolysis of other proteins? multiple answers A. RAS B. Epidermal Growth factor C. Notch Receptor D. TGF-Beta Receptor E. Estrogen Receptorarrow_forwardExplain the three stages of cell signaling. a. receptor b. transduction c. response. Attach imagesarrow_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_forward
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