Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 13, Problem 19P
Interpretation Introduction
Interpretation:
Whether the flow of ions through a single open mechanosensitive channel increases or decreases in response to an appropriate stimulus needs to be explained.
ConceptIntroduction:
The appropriate stimulus will not raise in a single open mechano-sensitive channel. Mechanosensitive channels counter to membrane tension by changing their shape between open and closed state.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Plesae ASAP. thanku
Which of the following is not true about the glutamate family of ligand-gated ion channels?
a. members are AMPA, kinase, and NMDA channels
b. they are cation permable
c. channels subunits have 3 full transmembrane doamins
d. they require 5 subunits to amke a functional channel
Frog poison. Batrachotoxin (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+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?
Membrane Receptors and Medicine.
A patient, who has a stressful job, comes in with high blood pressure. The doctor prescribes beta-blockers to the patient. Explain what beta-blockers are and how these drugs help to bring down blood pressure to normal.
Chapter 13 Solutions
Biochemistry
Ch. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - Prob. 3PCh. 13 - Prob. 4PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10P
Ch. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - Prob. 14PCh. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 18PCh. 13 - Prob. 19PCh. 13 - Prob. 20PCh. 13 - Prob. 21PCh. 13 - Prob. 22PCh. 13 - Prob. 23PCh. 13 - Prob. 24PCh. 13 - Prob. 25PCh. 13 - Prob. 26PCh. 13 - Prob. 27PCh. 13 - Prob. 28PCh. 13 - Prob. 29PCh. 13 - Prob. 30PCh. 13 - Prob. 31PCh. 13 - Prob. 32P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.Similar questions
- Ligand binding and response. The following question involves the ligand binding to a receptor and the receptor's response to that ligand. What ligand concentration would be required for a full agonist with a KD of 8 nM to achieve a response of 0.75?arrow_forwardQuestion. Explain the signal transduction mechanism for slow ligand-gated ion channels.arrow_forwardBreak down + function Acetyichaline.(Ach) receptors (eacn Fort)arrow_forward
- = 20 nM. The rate of receptor-ligand complex formation with an A receptor-ligand complex has a dissociation constant of Ka added ligand concentration of 10 µM is 5 × 10³ s¯¹. What is the value of the reverse rate constant, k_₁ ? k_₁ = 8-1arrow_forwardPlease help me with this question. More than one answer may be correct. THe graph relating to the information is included below. The above figures show the rate of actin polymerization in the presence of various concentration of profilin (Pfn). In the top figure, flourescence intensity is a measure of total actin that has been polymerized, and this is plotted versus time in seconds. The shade of blue of the lines in the top figure correspond to the shaded blue bars representing various concentrations of profilin in the lower figure. The lower graph shows the initial rates of polymerization of actin plotted again concentration. Which of the following is true: Question 21 options: profilin in a molecular motor profilin is a promoter of actin polymerization profilin replaced G-actin in an F-actin strand and breaks the filament profilin is an inhibitor of actin polymerization profilin binds to G-actin, preventing it from polymerizingarrow_forwardnerve impulses. Neurotransmitters are packaged by the cell into small, membrane- bound sacs called vesicles. Upon receiving a chemical signal, the vesicles move towards the cell membrane and fuse with it, releasing the enclosed neurotransmitters from the terminal end of the nerve cell. Which organelle is most likely responsible for packaging neurotransmitters into a vesicle? Mitochondria Golgi body Ribosomes Nucleusarrow_forward
- Multiple Choice. Imagine a solution containing only water, sodium, and glucose. If a voltage is applied to the solution, glucose would move: (a) There would be no net movement of glucose (b) In the opposite direction of sodium (c) In the same direction and speed as sodium (d) In the same direction as sodium, but slower. (e) In the same direction as sodium, but faster.arrow_forwardhow signal summation works. Can the signals just be added? Does there need to be a break in the signals?arrow_forwardPlease ASAp. Thankyou. Question 4 The resting membrane potential is a negative value because of: a. High K+ inside of cells compared to the outside b. Open K+ channels at rest c. Phospholipid head groups on the inside of the membrane d, High sodium outside the cellarrow_forward
- True or False. The binding affinity between a peptide agonist and its specific G protein coupled receptor alone determines the sensitivity of a cell to the agonist peptide.arrow_forwardAssighment. Create a diagram which illustrates the typical signalling mechanism of action of each of the four common classes of receptor (e.g. kinase-linked receptors etc.) and possible routes of communication (autocrine etc.). Your diagram should show the specific molecules involved, the mechanisms of signal transduction and indicate the different pathways that are activated. It should include a specific example of a receptor, ligand and signalling pathway for each general class. Include as wide a variety of ligands and modes of action as you can. For each of the examples describe the mechanism of action in the form below. DO NOT use any of the ligand-receptor combinations provide to you in the Learning Materials to date - research and create a diagram for a novel pathway instead!arrow_forwardSYNTHESIS PORTION. Using your knowledge of the heart, blood vessels and factors affecting blood pressure, create a possible reflex control/feedback loop that would occur if a person's blood pressure suddenly decreases. Include all of the elements of a feedback loop. Your answer can simply be a list of steps that would occur, but make sure to indicate all of the elements of a feedback loop. This does not to be extremely detailed, I am looking for the elements of the feedback loop and to see that you understand the factors affecting blood pressure. I will start the loop: 1. Stimulus: Drop in blood pressure.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- BiochemistryBiochemistryISBN:9781319114671Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.Publisher:W. H. Freeman
Lehninger Principles of BiochemistryBiochemistryISBN:9781464126116Author:David L. Nelson, Michael M. CoxPublisher:W. H. Freeman
Fundamentals of Biochemistry: Life at the Molecul...BiochemistryISBN:9781118918401Author:Donald Voet, Judith G. Voet, Charlotte W. PrattPublisher:WILEY 
BiochemistryBiochemistryISBN:9781305961135Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougalPublisher:Cengage Learning
BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning
Fundamentals of General, Organic, and Biological ...BiochemistryISBN:9780134015187Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. PetersonPublisher:PEARSON
Biochemistry
Biochemistry
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:W. H. Freeman
Lehninger Principles of Biochemistry
Biochemistry
ISBN:9781464126116
Author:David L. Nelson, Michael M. Cox
Publisher:W. H. Freeman
Fundamentals of Biochemistry: Life at the Molecul...
Biochemistry
ISBN:9781118918401
Author:Donald Voet, Judith G. Voet, Charlotte W. Pratt
Publisher:WILEY
Biochemistry
Biochemistry
ISBN:9781305961135
Author:Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher:Cengage Learning
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Fundamentals of General, Organic, and Biological ...
Biochemistry
ISBN:9780134015187
Author:John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher:PEARSON