Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 11, Problem 9Q
Summary Introduction
To review:
The category to which uniporters, symporters, and antiporters belong.
Introduction:
The membrane transport mechanism is very much required to carry out various processes associated with life activity. The plasma membrane facilitates the transfer of ions and molecules across them. The transport mechanism can exhibit uniport, symport, and antiport based on the direction and number of solutes.
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Name two types of passive transport and three types of active transport
Label the examples:
Na+/K+ pump
Na+ and glucose
Ca+ and Na+
H+/K+ pump
K+ and Cl-
Cl- and HCO3-
Are they
either
1)Secondar active transport: counter transport
2) primary active transport
3) secondary active transport : contransport
Complete the table below regarding osmosis, diffusion, and active transport.
Osmosis
Diffusion
Active Transport
Describe the principles behind each process.
Cite an example where each of these processes is exhibited by animals.
Chapter 11 Solutions
Biochemistry: The Molecular Basis of Life
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- What is the Description and Examples in the body of these Cell transport? Explain in 2-3 sentencesDescription:Examples in the body: a. Diffusion b. Osmosis c. Facilitated Diffusionarrow_forwardwhat are the two forms of transport ? describe them active and passive transportarrow_forward1. Define osmosis, simple diffusion, facilitated diffusion. 2.. Identify why each of these is a form of passive transport. 3. Give examples of each type of passive transport.arrow_forward
- Describe in details the processes of active transport, including the concepts of pumps, primary active transport, secondary active transport, symports, and antiports. Indicate the sources of energy for moving solutes against their concentration gradients.arrow_forwardcompare and contrast the four in tables 1. active and passive transport 2. action membrane potential and resting membrane potential 3. endocrine and exocrine glandsarrow_forwardName two types of passive transport and one type of active transport.arrow_forward
- What are the important highlights in transport mechanism? Explain in 5 sentences.arrow_forwardCompare and contrast passive and active forms of transport, usingexamples of what is being transported and the requirements for each.arrow_forwardYou were introduced to osmosis in Chapter 8 earlier in the course. This week, Chapter 15 continues this discussion by introducing the cell membrane. For additional information, review one or two of the websites listed below. Osmosis: Real-life Applications How Is Osmosis Used in Kidney Dialysis? Guide to Forward Osmosis Applications Choose one way that osmosis and membranes are used in living things, medicine or industry. Describe how osmosis and membranes are used in the real-life application you chose. What are some of the materials necessary? Is an input of energy necessary?arrow_forward
- Make a table and summarize the 5 types of transport mechanisms (passive transport, facilitated diffusion, primary active transport, symporter, antiporter) and compare them in terms of the following: - Electrochemical gradient (downhill/uphill) - Carrier-mediated or Not - Metabolic Energyarrow_forwardWhat is another way to answer this question Describe various examples of active transport. How is active transport different from passive transport? Without saying this: Active transport is when cells move against the flow/ concentration gradient, moving from low concentrations to high concentrations. Because of this, active transport requires ATP to work. Passive transport is different because it doesn't use much energy and moves from high concentration to a low concentration. Some examples of active transport are the Sodium-potassium pump ( the most well known one) where it takes sodium ions and pumps them outside of the membrane to let in potassium ions. Another one in plants is when a plant receives ions from the soil. The soil has a much lower concentration of ions than a plants root does, so ions have to move against the concentration gradient. Endocytosis and exocytosis are also forms of active transport. Where cells engulf its self around large molecules to bring…arrow_forwardUsing the principles of osmosis, explain why movement of Na + through a plasma membrane is followed by movement of water. Use this concept to explain the rationale on which oral rehydration therapy is based.arrow_forward
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