Concept explainers
Figure 7.11 Dinitrophenol (DNP) is an "uncoupler" that makes the inner mitochondrial membrane "leaky" to protons. It was used until 1938 as a weight-loss drug. What effect would you expect DNP to have on the change in pH across the inner mitochondrial membrane? Why do you think this might be an effective weight-loss drug?

To write:
The effect of DNP on the pH across the mitochondrial membrane and the reason that it is a weight-loss drug.
Introduction:
Dinitrophenol (DNP) is an uncoupler. The flow of electrons can be separated by DNP along with the pumping of the H+ ion for the purpose of production of ATP (adenosine triphosphate). It means that the electron transport chain can no longer form a proton gradient, and ATP synthase can no longer make ATP.
DNP is a drug given to the patient for losing weight. After using DNA as weight loss drug, a person obtains less energy out of the eaten food. One of the worst side effects of taking DNP is overheating of the body, the energy from electron transport is lost as heat.
Explanation of Solution
DNP is an uncoupler, it disrupts the ATP synthesis by leaking protons across the inner mitochondrial membrane. As a result, the proton gradient cannot be formed across the inner mitochondrial membrane as pumping of H+ (hydrogen ion) is stopped. So, there will be a decrease in pH across the inner membrane of mitochondria.
Therefore, ATP production becoming less efficient. Hence, the energy which is normally produced during cellular respiration is being wasted as heat. In such condition, majority of the eaten food could not be used for the purpose of ATP synthesis and we lose weight.
DNP is an effective diet drug used to lose weight. It acts as an uncoupler which disrupts the H+ gradient across mitochondrial membrane reducing ATP synthesis. Since ATP cannot be formed, the energy from electron transport is lost as heat.
Want to see more full solutions like this?
Chapter 7 Solutions
BIOLOGY (OER)
Additional Science Textbook Solutions
Human Anatomy & Physiology (2nd Edition)
Campbell Essential Biology (7th Edition)
Campbell Biology in Focus (2nd Edition)
Biology: Life on Earth (11th Edition)
Campbell Biology (11th Edition)
Microbiology: An Introduction
- calculate the questions showing the solution including variables,unit and equations all the questiosn below using the data a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)arrow_forwardQUESTION 8 For the following pedigree, assume that the mode of inheritance is X-linked recessive, and that the trait has full penetrance and expressivity and occurs at a very low frequency in the hum population. Using XA for the dominant allele and Xa for the recessive allele, assign genotypes for the following individuals (if it is not possible to figure out the second allele of a genotype, that with an underscore): 2 m 1 2 1 2 4 5 6 7 8 9 IV 1 2 3 5 6 7 8 CO 9 10 12 13 V 1, 2 3 4 5 6 7 8 9 10 11 12 13 a. Il-1: b. 11-2: c. III-3: d. III-4: e. If individuals IV-11 and IV-12 have another child, what is the probability that they will have a boy with the disorder?arrow_forwardAnswerrarrow_forward
- please,show workings ahd solutions calculate the questions showing the solution including variables,unit and equations all the questiosn below using the data a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)arrow_forwardQuestion about consensus and the relationship to transcriptional activityarrow_forwardQuestion about archaea and eukaryotic general transcription homologsarrow_forward
- Question about general transcription factors and their relationship to polymerasesarrow_forwardIdentify the indicated structure?arrow_forwardrewrite: Problem 1 (Mental Health): The survivor victim is dealing with acute stress and symptoms of a post-traumatic stress disorder (PTSD) due to their traumatic experience during the January 2025 wildfire. Goal 1: To alleviate the client's overall level, frequency, and intensity of anxiety and PTSD symptoms so that daily functioning remains unimpaired. Objective 1: The client will learn and regularly use at least two anxieties management techniques to reduce anxiety symptoms to less than three episodes per week. Intervention 1: The therapist will provide psychoeducation about anxiety and PTSD, including their symptoms and triggers. The therapist will also teach and assist the client in adopting relaxation techniques, such as deep breathing exercises and progressive muscle relaxation, to better manage anxiety and lessen PTSD symptoms.arrow_forward
- O Macmillan Learning You have 0.100 M solutions of acetic acid (pKa = 4.76) and sodium acetate. If you wanted to prepare 1.00 L of 0.100 M acetate buffer of pH 4.00, how many milliliters of acetic acid and sodium acetate would you add? acetic acid: mL sodium acetate: mLarrow_forwardHow does the cost of food affect the nutritional choices people make?arrow_forwardBiopharmaceutics and Pharmacokinetics:Two-Compartment Model Zero-Order Absorption Questions SHOW ALL WORK, including equation used, variables used and each step to your solution, report your regression lines and axes names (with units if appropriate) :Calculate a-q a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)arrow_forward
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage Learning
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning




