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You are studying the rate of transport of a radioactively-labeled drug into cultured cells and discover that the rate of transport does not increase with increased drug concentration when you add drug at concentrations above 50 mM. The presence of another drug that is known to deplete intracellular stores of ATP has no effect on the accumulation of your drug inside the cell. What type of transport is responsible for entry of the drug into these cells?

You are studying the rate of transport of a radioactively-labeled drug into cultured cells and discover that the rate of transport does not increase with increased drug concentration when you add drug at concentrations above 50 mM. The presence of another drug that is known to deplete intracellular stores of ATP has no effect on the accumulation of your drug inside the cell. What type of transport is responsible for entry of the drug into these cells?

Human Anatomy & Physiology (11th Edition)
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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3. Transport Across Membranes You are studying the rate of transport of a radioactively-labeled drug into cultured cells and discover that the rate of transport does not increase with increased drug concentration when you add drug at concentrations above 50 mM. The presence of another drug that is known to deplete intracellular stores of ATP has no effect on the accumulation of your drug inside the cell. What type of transport is responsible for entry of the drug into these cells?
Transcribed Image Text:3. Transport Across Membranes You are studying the rate of transport of a radioactively-labeled drug into cultured cells and discover that the rate of transport does not increase with increased drug concentration when you add drug at concentrations above 50 mM. The presence of another drug that is known to deplete intracellular stores of ATP has no effect on the accumulation of your drug inside the cell. What type of transport is responsible for entry of the drug into these cells?
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