Some orally active drugs do not obey the rule of five. For example, some polar drugs with amolecular weight between 200 and 500 are found to be orally active. Which of the followingmechanisms is the most likely reason for this? Select one: a. Ion channels. b. Passagethrough pores between the cells of the gut wall. c. Transport by transport proteins. d.Pinocytosis.

Alternative absorption pathways are investigated in response to oral active medications that violate…

Answered: Some orally active drugs do not obey…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Which of the following amino acid residues cannot play a role in acid-base catalysis? a. Aspartate Ob. Phenylalanine c. Glutamate Od. Histidine
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You are studying Protein X, which is a tetramer whose function is to bind glucose. You have found a molecule that is an allosteric effector of the protein’s activity. This means that: a. The molecule causes Protein X to bind O2 very tightly b. The molecule does not bind in the active site but affects the function of the protein c. The molecule is highly negatively charged d. The molecule binds in the same site as glucose
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Which ONE of the following best describes amoxicillin? Select one: A. A natural product produced by Streptomyces spp. B. Suitable for use alone against beta-lactamase-producing bacteria C. Inhibits the transglycosylation step in peptidoglycan synthesis D. The presence of an amino group facilitates entry through water-filled porins within the outer membrane of E. coli E. Is classified as a carbapenem
1) Which of the following contains all of the information required to target a precursor protein from the cytosol to the mitochondrial matrix? a. N-terminal uptake-targeting sequence b. C-terminal uptake-targeting sequence c. post-translational organelle d. translocon e. None of the above 2) In the absence of targeting information, what is the default location of proteins synthesized on cytosolic ribosomes? a. Golgi apparatus b. ER lumun c. Cytosol d. Cell plasma membrane e. ER membrane
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Fluconazole is used to treat yeast infections by inhibiting the production of ergosterol. What would happen if you took away the ability for the yeast to produce ergosterol?
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The proteins : oxidase ,kinase,lipase, isomerase are all known to function as a. channels b. transporters c.receptors d. enzymes e. none of the above
The gap junction channel formed by connexin 43 in cardiac muscle has which of the following properties? A. Is highly selective for sodium ions. B. Is opened and closed by a gate on the intracellular side of S4 C. Is non-selective for a wide variety of ions. D. Is opened and closed by positive charges on 54 E. None of the above

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