Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5.1, Problem 2CSC
Vicious Venoms
Most snake venoms are nasty cocktails of toxins. In addition to breaking down phospholipids, some rattlesnake venoms contain toxins that bind to and inhibit the activity of receptor proteins for acetylcholine. Inhibiting the action of acetylcholine on heart muscle cells increases heart rate, which speeds the travel of venom through the body. Krait snakes, native to Asia, produce a venom protein that binds to the direct-acting membrane channel receptors for acetylcholine, including those on skeletal muscle cells. Once bound, the protein remains firmly attached, blocking acetylcholine from binding. This prevents muscles from contracting: an untreated krait bite victim often dies when the skeletal muscles that control breathing are paralyzed.
The ability of substances to move across membranes is crucial not only to controlling heart rate and breathing, but also to all other aspects of staying alive. How do proteins control the movement of substances across membranes?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Given lecithin, sphingomyelin, cephalin, phosphatidylcholine which of the following does not contain glycerol as a backbone?
Histamine 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.
Which of the following is true of oxytocin?
Multiple Choice
The paraventricular nuclei are neurons where oxytocin is synthesized.
Phenylalanine and arginine are the amino acids present in oxytocin.
Oxytocin is essential for water conservation throughout life.
Oxytocin is not a polypeptide.
Chapter 5 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 5.1 - Prob. 1CYLCh. 5.1 - diagram and describe the fluid mosaic model of...Ch. 5.1 - Prob. 3CYLCh. 5.1 - Researchers have recently discovered ion channels...Ch. 5.1 - Vicious Venoms Some of the most devastating...Ch. 5.1 - Vicious Venoms Most snake venoms are nasty...Ch. 5.2 - Prob. 1CYLCh. 5.2 - Prob. 2CYLCh. 5.2 - Prob. 3CYLCh. 5.2 - Prob. 1TC
Ch. 5.2 - Prob. 2TCCh. 5.2 - If a plant cell is placed in water containing no...Ch. 5.2 - Would a cell over use active transport to move...Ch. 5.2 - Prob. 5TCCh. 5.2 - Prob. 1HYEWCh. 5.3 - Prob. 1CYLCh. 5.3 - explain how these junctions function and provide...Ch. 5.3 - Prob. 1TCCh. 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 - Prob. 4FIBCh. 5 - After each molecule, place the two-word term that...Ch. 5 - Prob. 6FIBCh. 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. 9RQCh. 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
- HELParrow_forwardIn lecture, we briefly discussed a species of copepods that live in pools of water that have varying salinity levels. You are conducting a study on the physiological response of these same copepods in fresh water, salt water, or various ratios of mixes of fresh water and salt water. Copepods stored in a tank of 0.35 percent salinity are placed in four tanks with percent salinity solutions ranging from fresh water to salt water, and the concentration of amino acids in the copepods is measured after two hours. How would you expect the amino acid concentration to be changing over time, if at all, for the copepods placed in each tank? Group of answer choices 0.0035 : increasing; 0.035 : increasing; 0.35 : increasing; 3.5 : increasing 0.0035 : decreasing; 0.035 : decreasing; 0.35 : decreasing; 3.5 : decreasing 0.0035 : decreasing; 0.035 : decreasing; 0.35 : decreasing; 3.5 : increasing 0.0035: decreasing; 0.035 : decreasing; 0.35 : no change; 3.5 : increasing 0.0035 : increasing;…arrow_forwardThyroxine is a thyroid hormone that is involved in regulation of metabolic rate - higher thyroxine levels result in higher metabolic rate. Thyroxine is an amine hormone, and it is lipid soluble. Which of these statements about thyroxine is true? Thyroxine cannot cross cell membrane Thyroxine has high solubility in blood Thyroxine can only have membrane-bound receptors Thyroxine can diffuse across a membrane and bind a receptor in the cell nucleusarrow_forward
- Choose 1 or more than 1 Which of the following statements applies to G proteins? G protein-coupled receptors transduce signal from outside to inside the cell. G proteins are in the Golgi apparatus as indicated by their name. G proteins have a similar structure. G proteins activate transduction cascades leading to cell responses. G proteins are the targets of medicinal drugs..arrow_forwardplease see attachedarrow_forwardCalcium and Chlorine are an important part of your diet. Describe the processes they participate in. Be sure to name receptors, channels, signaling molecules and processes.arrow_forward
- In insects such as Drosophila, electrical synapses are abundant in the ventral nerve cord. The cytosol of cells in an electrical synapse are connected, allowing action potentials to spread rapidly. What junctional proteins in Drosophila are chiefly responsible for this unique feature? Connexins Integrins Cadherins Claudinsarrow_forwardCompound C is a pharmaceutical agent that blocks AMPK activity. How might compound C influence adaptation following resistance exercise? How might compound C influence adaptation following endurance exercise? Be specific and remember this section is Molecular Signalingarrow_forwardMucopolysaccharides form the cementing substances between cells and tissue structures where they also act as shock absorbers. Why? A. Mucopolysaccharides have a structure that is made up of proteins and carbohydrates and can easily form a matrix that surrounds cells. B. Mucopolysaccharides have a negative charge that cushions against shock by having a matrix of repulsive molecules C. Mucopolysaccharides form flexible structures which can accommodate a large amount of water because the sugars are not covalently linked and forms a cushion surrounding cells. D. Mucopolysaccharides are natural adhesives. E. Mucopolysaccharides are large molecules.arrow_forward
- The myoglobin in meat contains a heme (iron) group that can interact with different molecules. The different molecules bound to the heme group change the shape of the whole myoglobin protein, resulting in the myoglobin reflecting different wavelengths of light depending on which molecules are bound. This is why meat changes colors. Which form of cooking will result in meat having heme (Fe) groups being bound to nitric oxide? Curing Smoking O Frying Bakingarrow_forwardPlease help me, idk if my answer is correct and I am trying to use this to study!!arrow_forwardPlease help me, idk if my answer is correct and I am trying to use this to study!!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Immune System and Immune Response Animation; Author: Medical Sciences Animations;https://www.youtube.com/watch?v=JDdbUBXPKc4;License: Standard YouTube License, CC-BY
Immune response: summary; Author: Dr Bhavsar Biology;https://www.youtube.com/watch?v=ADANgHkX4OY;License: Standard Youtube License