Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 7.5, Problem 1R
Summary Introduction
To review:
Features of direct communication and chemical signaling between the cells and advantage of direct communication over chemical signaling.
Introduction:
To work in organized fashion cells need to communicate with each other. This communication takes place directly or with the help of chemical transmitters. The direct communication involves gap junctions. Chemical transmission involves single amino acids, such as glycine and glutamate. Chemical signaling might also involve peptides like acetylcholine, serotonin, histamine, and others.
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Life: The Science of Biology
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- Explain the function of signaling receptors and their ligands in cell-cell interactionsarrow_forwardWhat is the main benefit of cell signaling via direct physical contact and cell signaling over short distances (ex: nerve cell signaling)?arrow_forwardHow is the purpose of cell signaling different in unicellular organisms vs. multicellular organisms? Provide an example of each.arrow_forward
- All cells of a multicellular organism may not respond in the same wayto a particular ligand (signaling molecule) that binds to a cell surfacereceptor. The difference in response may be due toa. the type of receptor for the ligand that the cell expresses.b the affinity of the ligand for the receptor in a given cell type.c. the type of signal transduction pathways that the cell expresses.d. the type of target proteins that the cell expresses.e. all of the above.arrow_forwardWhat are the two major mechanisms through which cell signaling leads to a change in cell behavior?arrow_forwardNitric oxide produced by the endothelial layer of blood vessels stimulates the smooth muscle layer underneath to relax, leading to widening of blood vessel lumen and subsequent decrease in blood pressure. This type of cellular communication between endothelial and smooth muscle cells is an example of what type of chemical signaling?arrow_forward
- Explain how the interactions trigger intracellular signals that leadto the cell’s response?arrow_forwardWhat type of cell signaling receptor is depicted below a. Cytoplasmic Receptor b. Transmembrane Receptor c. Intracellular Receptor d. Nuclear Receptorarrow_forwardWhat is the response step of signaling?arrow_forward
- Describe three types of responses that cells make to signaling molecules.arrow_forwardCan a cell have multiple responses to one stimulus? A) Yes, such as a second messenger activating a kinase and a transcription factor B) No, one stimulus = one response. C) Yes, but only if the stimulus activates two different types of receptors, like a GPCR and a protein kinase receptor at the same timearrow_forwardDescribe several specific examples of signaling pathways (celll cell communication)in animals and plants in developmental biologyarrow_forward
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Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license