Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 5.1, Problem 2CSC
Summary Introduction
To determine: The physiological processes that underlie the movement of substances across membranes.
Introduction: Snake venom produces many pathological effects such as neuromuscular damage, blood coagulation, muscular damage, and all of these systems damage starts with tissue damage. Phospholipase is the main enzyme that is present in snake venom.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
The Structure of the acetylcholine receptor is shown below:
A. Knowing the amino acid sequence of this protein, what tool would you use to identify the membrane-spanning region? Explain how it works.
Endothelins are 21-amino acid vasoconstricting peptides produced primarily in the endothelium. They have an important role in vascular homeostasis. Endothelin activates G protein-coupled receptors (GPCRs) ETA or ETB on a target cell. Which subunit of heterotrimeric G protein is released when the receptor is activated?
a.) gamme
b.) beta
c.) alpha
The fight-or-flight reaction prepares an animal to Pesponu Lu a
threatening situation, by either fighting or running away. One
aspect of this response is changes in blood flow such that the
skeletal muscles and heart receive higher blood flow (vessels
dilate) while digestive organs receive less (vessels constrict). A)
Which signal molecule(s) is/are involved in this response, and
how do they produce these changes in blood vessels?
Briefly explain how this example illustrates how different cells
are able to use the same ligands in different ways.
Chapter 5 Solutions
Biology
Ch. 5.1 - Vicious Venoms Some of the most devastating...Ch. 5.1 - Prob. 1TCCh. 5.1 - Prob. 2CSCCh. 5.1 - Prob. 1CYLCh. 5.1 - diagram and describe the fluid mosaic model of...Ch. 5.1 - Prob. 3CYLCh. 5.2 - Prob. 1CYLCh. 5.2 - Prob. 2CYLCh. 5.3 - What is likely to have happened If, instead of...Ch. 5.3 - Prob. 1HYEW
Ch. 5.3 - Prob. 2TCCh. 5.3 - If a plant cell is placed in water containing no...Ch. 5.3 - Would a cell over use active transport to move...Ch. 5.3 - Prob. 5TCCh. 5.3 - Prob. 1CYLCh. 5.3 - Prob. 2CYLCh. 5.3 - Prob. 3CYLCh. 5.3 - Prob. 6TCCh. 5 - Animal cells are surrounded by________ fluid is...Ch. 5 - Which of the following cannot enter a cell by...Ch. 5 - Prob. 3MCCh. 5 - Prob. 4MCCh. 5 - Prob. 5MCCh. 5 - Prob. 1FIBCh. 5 - A membrane that is permeable to some substances...Ch. 5 - Prob. 3FIBCh. 5 - After each molecule, place the two-word term that...Ch. 5 - Prob. 5FIBCh. 5 - Prob. 1RQCh. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQCh. 5 - Define hypotonic, hypertonic, and isotonic. What...Ch. 5 - Describe the following types of transport...Ch. 5 - Prob. 7RQCh. 5 - Prob. 8RQCh. 5 - Prob. 1ACCh. 5 - Predict and sketch the configuration that ten...
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
- taw a graph representing the changes in membrane potential across the axonal membrane before, during, and after an action potential, On your graph, use a highlighter to clearly indicate for which portions of your graph the letter corresponding to each cellular event listed below belongs. List of cellular events: A) All K* channels open B) All Nat channels close C) The Na*/K* ATPase cotransporter transports Nat and K* across the membrane. D) All Na* channels open E) The threshold value of membrane potential is attained. F) All K* channels close G) Some Nat channels open Your graph: o pe cffectonarrow_forwardHistamine is a chemical substance released in inflammatory and allergic response. The histamine H1 receptor is a G protein-coupled receptor that activates phospholipase C in response to the binding of histamine. Arrange the data below showing the process of histamine signal transduction from the H1 receptor. Calcium ions flow through ligand-gated ion channel. Phosphorylation cascade leads to the activation of a cellular response. Calcioum ions activate a protein, leading to a cellular response. Enzyme cleaves PIP2, forming DAG and IP3. Calcium iom concentration increases in the cytosol. IP3 binds to a ligand-gated ion channel in thw ER membrane.arrow_forwardAfter discussing his case with his physician, he learned that he had probably been the victim of pufferfish poisoning. The active toxin in the tissues of this fish is a chemical called tetrodotoxin (TTX). Tetrodotoxin is in a class of chemicals known as neurotoxins because it exerts its effects on neurons. The specific action of tetrodotoxin is that it blocks voltage-gated sodium ion channels. Define the following phrases and terms associated with the signs and symptoms of Dr. Westwood’s TTX poisoning: diaphoresis motor dysfunction paresthesias cyanotic hypoventilating bradycardia gastric lavage oxygen saturation As mentioned in the case description, tetrodotoxin is a molecule that blocks voltage-gated sodium ion channels. What is a voltage-gated sodium ion channel and what is its function? When nerve cells are at rest, there is an unequal amount of positive and negative charges on either side of a nerve cell membrane. This charge difference creates an electrical potential.…arrow_forward
- Name three features common to the activation of cytokine receptors and receptor tyrosine kinases. Name one difference with respect to the enzyme activity of these receptors.arrow_forwardLigand binding to proteins may occur with varying strengths; some ligands bind tightly to proteins while others bind less tightly. The strengths of reversible binding are determined experimentally by varying concentrations of ligands, and measuring the saturation of the protein in the various ligand concentrations. One such laboratory study investigated the binding of a hormone to three different receptor proteins in the cell membrane. The data collected are shown in the table below: 1) Provide a brief explanation as to why ligand binding to proteins must be a reversible process. 2) Calculate the dissociation constant (Kd) for the hormone binding to each of the three proteins.arrow_forwardThe membrane potential in animal cells, but not in plants, depends largely on resting K+ channels. How do these channels contribute to the resting membrane potential? Why are these channels considered to be nongated channels? How do these channels achieve selectivity for K+ versus Na+, which is smaller than K+?arrow_forward
- Fill in the diagram, your illustration should demonstrate for each phase of the AP: 1. The relative concentration of K and Na 2. The relative voltage across the membrane 3. Any movement across the membrane of K and NA 4. The three kinds of channels in the membrane, and their state (open or closed) 5. Finally, indicate on the graph of the AP which phases correspond to hyper- polarization and which phases correspond to de- polarization Outside Outside Inside Inside Outside Inside Outside 1 Outside Inside Insidearrow_forwardWhich of the following statements best describes the features of voltage-gated K+ channels? They consist of 4 subunits, are activated at the same time as voltage-gated Na+ channels, but do not inactivate. They consist of 4 subunits, are activated by depolarisation and close slowly during the refractory period. They have 24 membrane spanning alpha helices, 4 of which have positively charged amino acids which promote a conformational change in the channel following depolarisation. They consist of 4 subunits and are open at rest which causes the resting membrane potential to be close to the K+ equilibrium potential.arrow_forwardAcetylcholine is a neurotransmitter that, when bound to its receptor, causes the receptor to open a channel that allows the flow of Na+ ions into neurons. When the Na+ ions begin to flow into the neuron, this change in the net charge across the neuronal cell membrane often triggers Ca2+ ion channels to open. In this scenario, the acetylcholine receptor would be acting as a channel, and the Ca2+ channels would be classified as voltage-gated; leaky ligand gated; voltage-gated symporter; antiporter None of the above. ionarrow_forward
- Which statement best describes the interaction that occurs as a result of the binding of a ligand to a ligand-gated ion channel receptor? A B с D ligand extracellular environment gate closed inactive ligand-gated ion channel receptor ions The process permanently opens or closes the ion channel. cytoplasm The process alters the membrane potential by changing the intracellular ionic concentration. The process causes G proteins to bind with GTP and become activated. The process removes three sodium ions from the cell and brings in two potassium ions.arrow_forwardA group of researchers have isolated three novel compounds from the venom of a newly discovered species of wasp. Based on their structure and protein chemistry, the researchers believe that all three compounds may have strong anti-inflammatory activity and they have devised an experiment to test whether their compounds can reduce muscle damage after exercise. They plan to induce muscle damage in mice by causing repeated eccentric contractions (by running them downhill on a treadmill), and then examine the amount of inflammation in the muscles of their mice 24hrs later. They will use the following treatment groups: Sample 1) no treatment (control) Sample 2) 1mg/kg of Compound ‘A’ Sample 3) 1mg/kg of Compound ‘B’, and; Sample 4) 1mg/kg of Compound ‘C’. They perform their experiment and analyse their results using ANOVA followed by a post-hoc test. The results are as follows: (IMAGE ATTACHED) QUESTION IS: Based on this report (and assuming that none of the compounds significantly…arrow_forwardA group of researchers have isolated three novel compounds from the venom of a newly discovered species of wasp. Based on their structure and protein chemistry, the researchers believe that all three compounds may have strong anti-inflammatory activity and they have devised an experiment to test whether their compounds can reduce muscle damage after exercise. They plan to induce muscle damage in mice by causing repeated eccentric contractions (by running them downhill on a treadmill), and then examine the amount of inflammation in the muscles of their mice 24hrs later. They will use the following treatment groups: Sample 1) no treatment (control) Sample 2) 1mg/kg of Compound ‘A’ Sample 3) 1mg/kg of Compound ‘B’, and; Sample 4) 1mg/kg of Compound ‘C’. They perform their experiment and analyse their results using ANOVA followed by a post-hoc test. The results are as follows: (IMAGE ATTCAHED) QUESTION IS: Having selected which of their compounds seems the most promising, the…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Intro to Cell Signaling; Author: Amoeba Sisters;https://www.youtube.com/watch?v=-dbRterutHY;License: Standard youtube license