Anatomy and Physiology - MasteringA&P Access
5th Edition
ISBN: 9780321887917
Author: Marieb
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 24RQ
Comment on the role of the sodium-potassium pump in maintaining of cell’s resting membrane potential.
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Comment on the role of the sodium-potassium pump in maintaining a cell’s resting membrane potential.
apply the basic principles underlying the structure of the cell membrane and proteins to understand the nature of electrical excitability in cells?
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Chapter 3 Solutions
Anatomy and Physiology - MasteringA&P Access
Ch. 3 - Summarize the four key points of the cell theory.Ch. 3 - How would you explain the meaning of a generalized...Ch. 3 - What basic structure do all cellular membranes...Ch. 3 - Why do phospholipids, which form the greater part...Ch. 3 - What is the importance of the glycocalyx in cell...Ch. 3 - Prob. 6CYUCh. 3 - What is the energy source for all types of...Ch. 3 - What determines the direction of any diffusion...Ch. 3 - What are the two types of facilitated diffusion...Ch. 3 - What happens when the Na+-K+ pump is...
Ch. 3 - As a cell grows, its plasma membrane expands. Does...Ch. 3 - Prob. 12CYUCh. 3 - Which vesicular transport process allows a cell to...Ch. 3 - What process establishes the resting membrane...Ch. 3 - Prob. 15CYUCh. 3 - What term is used to indicate signaling chemicals...Ch. 3 - Which organelle is the major site of ATP...Ch. 3 - What are three organelles involved in protein...Ch. 3 - Compare the functions of lysosomes and...Ch. 3 - How are microtubules and microfilaments related...Ch. 3 - Prob. 21CYUCh. 3 - Prob. 22CYUCh. 3 - If a cell ejects or loses its nucleus, what is its...Ch. 3 - What is the role of nucleoli?Ch. 3 - What is the role of nucleoli?Ch. 3 - If one of the DNA strands being replicated reads...Ch. 3 - During what phase of the cell cycle is DNA...Ch. 3 - What are three events occurring in prophase that...Ch. 3 - Codons and anticodons are both three-base...Ch. 3 - How do the A, P, and E ribosomal sites differ...Ch. 3 - What is the role of DNA in transcription?Ch. 3 - What is the importance of ubiquitin in the life of...Ch. 3 - Prob. 33CYUCh. 3 - The smallest unit capable of life by itself is (a)...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - The term used to describe the type of solution in...Ch. 3 - Osmosis always involves (a) a selectively...Ch. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - The endocytotic process in which a sampling of...Ch. 3 - Prob. 9RQCh. 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. 19RQCh. 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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- Draw a sketch of a graph showing a complex AHP consisting of a first component AHP, an ADP, and a second component AHP before repolarization to resting membrane potentialarrow_forwardDescribe the fluid properties of the cell membrane and explain how membrane fluidity is influenced by membrane composition.arrow_forwardWhat kind of membrane proteins trigger a change in cellular activity in response to a stimulus?arrow_forward
- Examine the figure shown here and answer the questions about it below. The type of movement across membranes shown in this figure is called_______ . Is this type of movement endergonic or exergonic?arrow_forwardBriefly describe the significance of permeability and ionic concentrations in the process of maintenance of cellular membrane potential.arrow_forwardDescribe two things that contribute to the resting membrane potearrow_forward
- COMPARE AND CONTRAST THEM IN TABLES 1. action membrane potential and resting membrane potential 2. endocrine and exocrine glandsarrow_forwardExplain how a membrane that is said to be “resting” can continually use energy to transport ions.arrow_forwardExplain the mechanism that maintains unequal concentrations of ions on opposite sides of a cell membrane.arrow_forward
- How are vesicles with neurotransmitter transported to the synaptic cleft? A. Retrograde, slow transport. B. Anterograde, slow transport. C. Retrograde, fast transport. D. Anterograde, fast transport.arrow_forwardExplain why there is resting membrane? *arrow_forwardDescribe the mechanism of active transport. Sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.arrow_forward
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