Anatomy & Physiology (6th Edition)
6th Edition
ISBN: 9780134156415
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Textbook Question
Chapter 3.6, Problem 1CYU
What term is used to indicate signaling chemicals that bind to membrane receptors? Which type of membrane receptor is most important in directing intracellular events by promoting formation of second messengers?
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Chapter 3 Solutions
Anatomy & Physiology (6th Edition)
Ch. 3.1 - Summarize the four key points of the cell theory.Ch. 3.1 - How would you explain the meaning of a generalized...Ch. 3.2 - What basic structure do all cellular membranes...Ch. 3.2 - What is the importance of the glycocalyx in cell...Ch. 3.2 - Prob. 3CYUCh. 3.2 - Phospholipid tails can be saturated or unsaturated...Ch. 3.3 - What is the energy source for all types of...Ch. 3.3 - What determines the direction of any diffusion...Ch. 3.3 - What are the two types of facilitated diffusion...Ch. 3.4 - What happens when the Na+-K+ pump is...
Ch. 3.4 - As a cell grows, its plasma membrane expands. Does...Ch. 3.4 - Prob. 3CYUCh. 3.4 - Which vesicular transport process allows a cell to...Ch. 3.5 - What process establishes the resting membrane...Ch. 3.5 - Is the inside of the plasma membrane negative or...Ch. 3.6 - What term is used to indicate signaling chemicals...Ch. 3.7 - Which organelle is the major site of ATP...Ch. 3.7 - What are three organelles involved in protein...Ch. 3.7 - Compare the functions of lysosomes and...Ch. 3.7 - How are microtubules and microfilaments related...Ch. 3.7 - Prob. 21CYUCh. 3.8 - Prob. 22CYUCh. 3.9 - If a cell ejects or loses its nucleus, what is its...Ch. 3.9 - What is the role of nucleoli?Ch. 3.9 - What is the role of nucleoli?Ch. 3.10 - If one of the DNA strands being replicated reads...Ch. 3.10 - During what phase of the cell cycle is DNA...Ch. 3.10 - What are three events occurring in prophase that...Ch. 3.11 - Codons and anticodons are both three-base...Ch. 3.11 - How do the A, P, and E ribosomal sites differ...Ch. 3.11 - What is the role of DNA in transcription?Ch. 3.12 - What is the importance of ubiquitin in the life of...Ch. 3.12 - Prob. 2CYUCh. 3 - The smallest unit capable of life by itself is (a)...Ch. 3 - Prob. 2MCCh. 3 - Prob. 3MCCh. 3 - The term used to describe the type of solution in...Ch. 3 - Osmosis always involves (a) a selectively...Ch. 3 - Prob. 6MCCh. 3 - Prob. 7MCCh. 3 - The endocytotic process in which a sampling of...Ch. 3 - Prob. 9MCCh. 3 - The nuclear substance composed of histone proteins...Ch. 3 - The information sequence that determines the...Ch. 3 - Mutations may be caused by (a) X rays, (b) certain...Ch. 3 - The phase of mitosis during which centrioles each...Ch. 3 - Final preparations for cell division are made...Ch. 3 - The RNA synthesized on one of the DNA strands is...Ch. 3 - The RNA species that travels from the nucleus to...Ch. 3 - If DNA has a sequence of AAA, then a segment of...Ch. 3 - A nerve cell and a lymphocyte are presumed to...Ch. 3 - Prob. 19MCCh. 3 - Explain why mitosis can be thought of as cellular...Ch. 3 - Contrast the roles of ER-bound ribosomes with...Ch. 3 - Cells lining the trachea have whiplike motile...Ch. 3 - Name the three phases of interphase and describe...Ch. 3 - Comment on the role of the sodium-potassium pump...Ch. 3 - Differentiate between primary and secondary active...Ch. 3 - Cell division typically yields two daughter cells,...
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- What is the sequence of events that takes place in cell signaling?arrow_forwardDistinguish among the four types of extracellular chemical messengers with regard to their source and the distance to their target cells.arrow_forwardWhat accounts for the specificity of a cellular response to a signal molecule?arrow_forward
- In terms of cell communication, compare and contrast the action of hydrophilic versus hydrophobic ligands (signaling molecules). What type of receptor is used by these ligands? How does each type of ligand influence cell activity?arrow_forwardSuppose that a G protein undergoes a mutation that allows the exchange of bound GTP for GDP to occur in the absence of G protein binding to a receptor. How might this mutation affect signaling involving a GPCR? Which subunit of the G protein is most likely affected by the mutation?arrow_forwardWhat is a second messenger in cell signaling, and what kinds of molecules can act as second messengers?arrow_forward
- What is the nature of the receptors that bind intercellular chemical messengers?arrow_forwardA cell signaling molecule that triggers an effect only in the vicinity of the cell secreting is is an example of ?arrow_forwardWhat are the three types of cell signal receptors found in the plasma membrane?arrow_forward
- When activated extracellularly, G protein-coupled receptors (GPCRs) initiate which of the following? (select all that apply) a G protein signaling mechanism inside the cell. b) A G protein signaling mechanism outside the cell. c) Transporters to uptake degraded neurotransmitters for recycling. d) The release of neurotransmitter molecules into the postsynaptic cell.arrow_forwardDescribe three different responses of a cell-surfacereceptor on binding a signaling molecule and undergoing aconformational change.arrow_forwardDuring neuronal signaling, a change in membrane potential will cause sodium channelsto open and let Na+ ions diffuse down their concentration gradient into the cell. Whichof the following helps establish the concentration gradient necessary for this process tooccur?arrow_forward
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