Biology: The Unity and Diversity of Life (Looseleaf)
15th Edition
ISBN: 9781337408417
Author: STARR
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 39, Problem 4CT
Cholera is a disease caused by bacteria that make cholera toxin. In the presence of this toxin, chloride ion channels in cells of the small intestine lining are stuck in their open position. As a result, an excess of chloride ions (Cl−) flows from these cells into the lumen of the small intestine. Movement of Cl− creates a charge gradient, so sodium ions (Na+) also flow into the lumen. Explain why the movement of these ions into the lumen results in the life-threatening diarrhea that characterizes cholera.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
They got this question wrong the 2 previous times I uploaded it here, please make sure it's correvct this time.
This question has multiple parts (A, B & C), and under the subject of Nutrition. Thank you!
Calculate the CFU/ml of a urine sample if 138 E. coli colonies were counted on a Nutrient Agar Plate when0.5 mls were plated on the NA plate from a 10-9 dilution tube. You must highlight and express your answerin scientific notatio
Chapter 39 Solutions
Biology: The Unity and Diversity of Life (Looseleaf)
Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Human Adaptation to a Starchy Diet The human AMY-1...Ch. 39 - Prob. 1SQCh. 39 - Prob. 2SQCh. 39 - Prob. 3SQCh. 39 - A bird's keratin-lined _______ helps it grind up...Ch. 39 - Prob. 5SQCh. 39 - Prob. 6SQCh. 39 - The low pH of the _______ aids in protein...
Ch. 39 - Prob. 8SQCh. 39 - Prob. 9SQCh. 39 - Eating a healthy diet entirely of plant foods...Ch. 39 - Prob. 11SQCh. 39 - Prob. 12SQCh. 39 - Prob. 13SQCh. 39 - Match each substance with its description. _____...Ch. 39 - Match each organ with its digestive function in...Ch. 39 - Some people who have gallstones experience pain...Ch. 39 - A python can survive by eating a large meal once...Ch. 39 - Although rabbits cannot break cellulose down into...Ch. 39 - Cholera is a disease caused by bacteria that make...
Additional Science Textbook Solutions
Find more solutions based on key concepts
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science (6th Edition)
Single penny tossed 20 times and counting heads and tails: Probability (prediction): _______/20 heads ________/...
Laboratory Manual For Human Anatomy & Physiology
Label each statement about the polynucleotide ATGGCG as true or false. The polynucleotide has six nucleotides. ...
General, Organic, and Biological Chemistry - 4th edition
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
SEELEY'S ANATOMY+PHYSIOLOGY
The validity of a scientific law.
Physical Universe
An obese 55-year-old woman consults her physician about minor chest pains during exercise. Explain the physicia...
Biology: Life on Earth with Physiology (11th Edition)
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
- Molecular Biology Question. Please help solve. Thanks. Please draw how two nucleotide triphosphates are linked together to form a dinucleotide, and label the 5' and 3' ends of the resulting dinucleotide.arrow_forwardWhat is a reversion in molecular biology?arrow_forwardWhat is a gain of function mutation?arrow_forward
- Molecular Biology Question: Please help. Thank you Is Southern hybridization's purpose detecting specific nucleotide sequences? How so?arrow_forwardUse the following information to answer the question(s) below. Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a measure of overall body size) plotted against the percent survival of these different size classes for males and females. Survival (%) 100- 80- 60- 40- 20- 0+ 1.9 T 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Log SVL (mm) 19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas? A) directional selection B) stabilizing selection C) disruptive selection D) You cannot determine the type of selection from the above information. 3arrow_forward24) Use the following information to answer the question below. Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not. They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin. Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are determined (see table) and used to determine the actual allele frequencies in the population. TT 0.49 Tt 0.42 tt 0.09 Refer to the table above. Is this population in Hardy-Weinberg equilibrium? A) Yes. C) No; there are more homozygotes than expected. B) No; there are more heterozygotes than expected. D) It is impossible to tell.arrow_forward
- 30) A B CDEFG Refer to the accompanying figure. Which of the following forms a monophyletic group? A) A, B, C, and D B) C and D C) D, E, and F D) E, F, and Garrow_forwardMolecular Biology Question. Please help with step solution and explanation. Thank you: The Polymerase Chain Reaction (PCR) reaction consists of three steps denaturation, hybridization, and elongation. Please describe what occurs in the annealing step of the PCR reaction. (I think annealing step is hybridization). What are the other two steps of PCR, and what are their functions? Next, suppose the Tm for the two primers being used are 54C for Primer A and 67C for Primer B. Regarding annealing step temperature, I have the following choices for the temperature used during the annealing step:(a) 43C (b) 49C (c) 62C (d) 73C Which temperature/temperatures should I choose? What is the corresponding correct explanation, and why would I not use the other temperatures? Have a good day!arrow_forwardUsing the data provided on the mean body mass and horn size of 4-year-old male sheep, draw a scatterplot graph to examine how body mass and horn size changed over time.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
Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License