Campbell Essential Biology (6th Edition) - standalone book
6th Edition
ISBN: 9780133917789
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece, Kelly A. Hogan
Publisher: PEARSON
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Chapter 5, Problem 9SQ
Summary Introduction
To determine:
The primary difference between passive and active transport in terms of concentration gradient.
Introduction:
Cell membrane is one of the major components of the cell. The membrane consists of bilayer of phospholipids with embedded proteins. The major function of these proteins is to provide pathway to the ions and smaller molecules to cross the phospholipid layer of cell which is impermeable.
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What is the primary difference between passive and active transport in terms of concentration gradients?
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What is the importance of the concentration gradient in passive transport?
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- What is the primary difference between active transport processes and passive transport processes?arrow_forwardWhat is the difference between active and passive transport processes?arrow_forwardAre symporters and antiporters always involved in active transport? Can't both solutes move in the same direction and be moving down their concentration gradient (and the same with antiporters)?arrow_forward
- Define the terms (i) facilitated diffusion, (ii) primary active transport and (iii) secondary active transport. Identify which of these transport types the following are examples of: a) ATP/ADP translocase b) K^+ channels c) Bacteriorhodopsinarrow_forwardA migrating fish would be rapidly transferring substances across cell membranes. These substances would include sodium, water, carbon dioxide, oxygen, and steroids. Which of those would be most likely to be moved via active transport? Why? What is a transmembrane gradient? What is an electrochemical gradient?arrow_forwardWhat is the difference between simple and facilitated diffusion? Facilitated by which type of molecule does the term “facilitated” mean?arrow_forward
- What is mediated transport? What types of particles movethrough the plasma membrane by mediated transport?arrow_forwardFor each type of membrane transport, know the following:– Is a transporter protein required? If so, what type?– Is there an energy requirement, and if so, what is the energy source?– What is the relative rate of solute transport based on molecule type? On concentration gradient?– What are examples of the types of solutes transported by carriers and channels?arrow_forwardName two types of passive transport and one type of active transport.arrow_forward
- What determine the direction in which net diffusion of a nonpolar molecule will occur?arrow_forwardIn terms of rate of transport of a molecule across a membrane , what is the difference between passive and active transport?arrow_forwardWhat is the combination of an electrical gradient and a concentration gradient called?arrow_forward
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