EBK SEELEY'S ANATOMY & PHYSIOLOGY
11th Edition
ISBN: 9781259671166
Author: VanPutte
Publisher: MCGRAW HILL BOOK COMPANY
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 3.5, Problem 15AYP
Summary Introduction
To determine:
The three kinds of channel proteins and the signals that cause each to open or close.
Introduction:
Channels proteins are composed of several integral proteins that form a small channel through a cell membrane. The hydrophobic parts of integral proteins face outward toward the hydrophobic side of a cell membrane.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which statement is TRUE regarding the Na+ voltage-gated channel in neurons? A) Similar to the potassium ion channel, it exists as a tetramer in the membrane. B) Aspartate residues are part of the voltage-sensing helices. C) Positive membrane potentials on the extracellular side will close the channel. D) Ion specificity comes from the voltage-sensing helices.
Ion channels, such as the K+ channel, can have open and closed forms that respond to membrane potential. In addition, an
amino-terminal domain, called the inactivation domain or inactivation gate, can block the channel. This is called the ball and
chain model of channel inactivation.
Identify the statements that correctly describe the ball and chain model.
The inactivation gate can only inactivate a channel that has closed in response to depolarization.
A shorter tether or chain peptide strand attached to the inactivation domain would increase the time required to
inactivate the K+ channel.
A mutation causing the loss of the inactivation gate in K+ channels could result in a membrane that undergoes
repolarization more slowly.
After depolarization and channel opening, the inactivation gate soon occludes the open channel.
What is the difference between a ligand-gated channel (like H1 or the AChR) and a voltage gated channel?
Chapter 3 Solutions
EBK SEELEY'S ANATOMY & PHYSIOLOGY
Ch. 3.1 - What parts are common to most cells?Ch. 3.1 - Explain the four characteristic functions of the...Ch. 3.2 - Which cell features can be seen with a light...Ch. 3.3 - Explain five functions of the plasma membrane.Ch. 3.3 - Prob. 5AYPCh. 3.3 - Prob. 6AYPCh. 3.3 - What are the main chemical components of the...Ch. 3.4 - Prob. 8AYPCh. 3.4 - Summarize the characteristics of the fluid-mosaic...Ch. 3.4 - Prob. 10AYP
Ch. 3.5 - Prob. 11AYPCh. 3.5 - Prob. 12AYPCh. 3.5 - What are the three classes of transport proteins?Ch. 3.5 - Describe specificity, competition, and saturation...Ch. 3.5 - Prob. 15AYPCh. 3.5 - Prob. 16AYPCh. 3.5 - Prob. 17AYPCh. 3.5 - Prob. 18AYPCh. 3.5 - Prob. 19AYPCh. 3.5 - Prob. 20AYPCh. 3.6 - Explain why the plasma membrane is selectively...Ch. 3.6 - Prob. 22AYPCh. 3.6 - Describe how the amount of solute in a solvent...Ch. 3.6 - How is the rate of diffusion affected by an...Ch. 3.6 - Prob. 25AYPCh. 3.6 - Compare isosmotic, hyperosmotic, and hyposmotic...Ch. 3.6 - Prob. 27AYPCh. 3.6 - Prob. 28AYPCh. 3.6 - What is secondary active transport? Describe how...Ch. 3.6 - Prob. 30AYPCh. 3.6 - Prob. 31AYPCh. 3.6 - Prob. 32AYPCh. 3.6 - Describe and give examples of exocytosis.Ch. 3.7 - Prob. 34AYPCh. 3.7 - Prob. 35AYPCh. 3.7 - List and describe the functions of microtubules,...Ch. 3.7 - What are cytoplasmic inclusions? Give several...Ch. 3.8 - Define organelles. Are oil orgonelles found in oil...Ch. 3.8 - Describe the structure of the nucleus and the...Ch. 3.8 - Prob. 40AYPCh. 3.8 - Prob. 41AYPCh. 3.8 - Prob. 42AYPCh. 3.8 - What molecules combine to form ribosomes? Where...Ch. 3.8 - Prob. 44AYPCh. 3.8 - Prob. 45AYPCh. 3.8 - What are the functions of the rough endoplasmic...Ch. 3.8 - Prob. 47AYPCh. 3.8 - Relate the structure and function of the Golgi...Ch. 3.8 - Prob. 49AYPCh. 3.8 - Prob. 50AYPCh. 3.8 - Prob. 51AYPCh. 3.8 - Prob. 52AYPCh. 3.8 - What are the structure and function of...Ch. 3.8 - Describe the structure of a mitochondrion. How...Ch. 3.8 - What enzymes are found on the cristae? In the...Ch. 3.8 - What is the centrosome? Relate the structure of...Ch. 3.8 - What are spindle fibers? Explain the relationship...Ch. 3.8 - Prob. 58AYPCh. 3.8 - Prob. 59AYPCh. 3.9 - Prob. 60AYPCh. 3.9 - Prob. 61AYPCh. 3.9 - Prob. 62AYPCh. 3.9 - Prob. 63AYPCh. 3.9 - Prob. 64AYPCh. 3.9 - Prob. 65AYPCh. 3.9 - Prob. 66AYPCh. 3.9 - Place the steps of translation in sequence. In...Ch. 3.9 - Prob. 68AYPCh. 3.9 - State two ways the cell controls what part of DNA...Ch. 3.10 - Describe the cell’s activities during the G1, S....Ch. 3.10 - Prob. 71AYPCh. 3.10 - Prob. 72AYPCh. 3.10 - Prob. 73AYPCh. 3.10 - Differentiate among chromot in, chromcitids, and...Ch. 3.10 - Prob. 75AYPCh. 3.10 - Prob. 76AYPCh. 3.10 - Prob. 77AYPCh. 3.11 - Prob. 78AYPCh. 3 - In the plasma membrane, _____ form(s) the lipid...Ch. 3 - Which of the following functioning proteins are...Ch. 3 - In general, lipid-soluble molecules diffuse...Ch. 3 - Small pieces of matter, and even whole cells, can...Ch. 3 - The rate of diffusion increases if the a....Ch. 3 - Concerning the process of diffusion, at...Ch. 3 - Prob. 7RACCh. 3 - Prob. 8RACCh. 3 - Which of these statements about facilitated...Ch. 3 - Which of these statements concerning the symport...Ch. 3 - A white blood cell ingests solid particles by...Ch. 3 - Given these characteristics: (1) requires energy...Ch. 3 - Cytoplasm is found a. in the nucleus. b. outside...Ch. 3 - Which of these elements of the cytoskeleton is...Ch. 3 - A large structure, normally visible in the nucleus...Ch. 3 - A cell that synthesizes large amounts of protein...Ch. 3 - Which of thes organelles produces large amounts of...Ch. 3 - Prob. 18RACCh. 3 - A portion of an mRNA molecule that determines one...Ch. 3 - In which of these organelles is m RNA synthesized?...Ch. 3 - During the cell cycle, DNA replication occurs...Ch. 3 - Given the following activities: Repair Growht...Ch. 3 - Apoptosis Is a programmed cell death. Removes...Ch. 3 - Prob. 1CTCh. 3 - Prob. 2CTCh. 3 - Prob. 3CTCh. 3 - Prob. 4CTCh. 3 - Luke started a training program at the beginning...Ch. 3 - Prob. 6CT
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What properties of ion channels allow them to generate the large, rapid changes in membrane potential?arrow_forwardJose measures membrane potential in two neighboring cells. He notices that when the membrane potential changes in one cell, the membrane potential of the neighboring cell changes in a similar manner. For example, if one cell hyperpolarizes, the neighboring cell also hyperpolarizes. He concludes the cells are electrically coupled. Which of the following is the most likely to cause the electrical coupling? a.) The electrical coupling is most probably due to integrins that connect the two cells. b.) The electrical coupling is most probably due to tight junctions that connect the two cells. c.) The electrical coupling is most probably due to desmosomes that connect the two cells. d.) The electrical coupling is most probably due to gap junctions that connect the two cells.arrow_forwardHow do A G protein directly gates the ion channel?arrow_forward
- Which of these answers explains why synaptic vesicles only releasee their neurotransmitter cargo in response to a signal? A) the necessary Rab proteins are not synthesized until an action potential arrives B) vesicle formation at the trans-Golgi network cannot occur in the absence of plasma membrane depolarization C) an additional protein, synaptotagmin, makes vesicle fusion dependent on the calcium concentration D)a plasma membrane transporter is needed to actively pump neurotransmitter into the synaptic cleft. These are inactive until membrane depolarizationarrow_forwardBatrachotoxin (BTX) is a steroidal alkaloid from the skin of Phyllobates terribilis , a poisonous Colombian frog (the source of the poison used on blowgun darts). In the presence of BTX, Na+ channels in an excised patch stay persistently open when the membrane is depolarized. They close when the membrane is repolarized . Which transition is blocked by BTX?arrow_forwardα-Bungarotoxin is a powerful neurotoxin found in the venom of a poisonous snake (Bungarus multicinctus). It binds with high specificity to the acetylcholine receptor (AChR; an integral membrane protein) andprevents its ion channel from opening. This interaction was used to purify AChR from the electric organ of torpedo fish.(a) Outline a strategy for using α-bungarotoxin covalently bound to chromatography beads to purify the AChR protein. (b) Outline a strategy for the use of [125I]α-bungarotoxin to purify the AChR protein.arrow_forward
- What is an important characteristic of ion channels?arrow_forwardA single type of ion may pass through several different typesof channels. Explain the term with an example?arrow_forwardMembrane channels and carriers both show changes in protein conformation. What is the role of such conformation changes in: (1) channels, and (2) carriers?arrow_forward
- Separately, draw a table using arrows to depict the appropriate magnitude and direction of the forces and ion fluxes at different membrane potentials for a ligand-gated channel that is equally permeable to both ion X+ and ion Y+. The equilibrium potential for ion X+ is -60 mV, and the equilibrium potential for ion Y+ is -20 mV. Which item (a, b, c, or d) best represents the forces and fluxes for a membrane potential of +20 mV? Upwards arrows means outward direction and downwards arrow means inward direction. The length of the arrow determines the magnitude.arrow_forwardThe Structure of the acetylcholine receptor is shown below: C. What type of channel is the acetylcholine receptor and what activates it?arrow_forwardWhat is the role of dynamin in recycling synaptic vesicles? What evidence supports this?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license