Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 37.2, Problem 3CC
Summary Introduction
To explain:
Whether diffusion eliminates the concentration gradient of a dye which has a net charge. Refer to Figure 5.9 “The diffusion of solutes across a syntheticmembrane” in the textbook.
Introduction:
Diffusion is the movement of a solute across a semi-permeable membrane “down its concentration gradient” (from higher concentration to lower concentration).
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Molecular Transport Across Membranes Workshop
How does the cell membrane control movement of materials?
The cellular membrane is critical to the maintenance of homeostasis in living
organisms. The cell membrane separates the cell from the external environment and
plays a critical role in regulating movement of material in and out of the cell.
Additionally, eukaryotic cells are made complex by the presence of internal
membranes that form organelles, so the cells may become specialized. These organelle
membranes create compartments within the cell that can do specific functions.
For this exercise, you will work in groups of four to progress through the activities.
At the end of each activity, one group (chosen at random) will share how they
responded and open the floor for further discussion.
Model 1 - Types of Ions and Molecules in a Cell
Type 4 Molecules
Molecular oxygen (O,):
Туре 1 Ions
Type 2 Molecules
Туре 3 Molecules
Glucose:
Water:
Potassium: K*
OH
0=0 D
Sodium: Na+ +
O-
Urea:…
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Chapter 37 Solutions
Campbell Biology in Focus
Ch. 37.1 - Prob. 1CCCh. 37.1 - Describe the basic pathway of information flow...Ch. 37.1 - WHAT IF? How might increased branching of an axon...Ch. 37.2 - Under what circumstances could ions flow through...Ch. 37.2 - WHAT IF? Suppose a cells membrane potential shifts...Ch. 37.2 - Prob. 3CCCh. 37.3 - How do action potentials and graded potentials...Ch. 37.3 - In multiple sclerosis (from the Greek skleros,...Ch. 37.3 - Prob. 3CCCh. 37.3 - WHAT IF? Suppose a mutation caused gated sodium...
Ch. 37.4 - Prob. 1CCCh. 37.4 - Organophosphate pesticides work by inhibiting...Ch. 37.4 - MAKE CONNECTIONS Name one or more membrane...Ch. 37 - What happens when a resting neuron's membrane...Ch. 37 - Prob. 2TYUCh. 37 - Prob. 3TYUCh. 37 - Why are action potentials usually conducted in one...Ch. 37 - Which of the following is a direct result of...Ch. 37 - Suppose a particular neurotransmitter causes an...Ch. 37 - Prob. 7TYUCh. 37 - Prob. 8TYUCh. 37 - DRAW IT Suppose a researcher inserts a pair of...Ch. 37 - Prob. 10TYUCh. 37 - FOCUS ON EVOLUTION An action potential is an...Ch. 37 - Prob. 12TYUCh. 37 - SYNTHESIZE YOUR KNOWLEDGE The rattlesnake alerts...
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