Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 7, Problem 6IQ
- a. What osmotic problems does the freshwater unicellular eukaryote Paramecium face, and what adaptations enable it to osmoregulate?
- b. Compare the ideal osmotic environment for animal cells and plant cells.
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a. What is the main class of proteins that cells use to adhere to theextracellular matrix?
b. How many proteins are in this family?
c. What are some ECM proteins that they bind?
(answer a, b, and c)
1) We measured weights before and after soaking a potato
in water of different salinities to demonstrate
osmosis. There are many other types of membrane
transport (as we learned from the Amoeba Sisters!), each
with their role in maintaining homeostasis and providing
energy, communication, and waste removal for the cell. So
why dwell on osmosis? There are some practical bigger-
picture things to consider.
Choose one of the following scenarios. Describe the
scenario. Describe the chain of events terms of tonicity_and
movement of water into or out of cells represented by the
scenario. Describe the predicted outcomes for the
cells/organisms involved.
What happens when you dry brine a turkey
before cooking?
●
• What happens to organisms in soil near salted
roads when snow melt and rains occur?
Why is sugar considered a good preservative?
What is the challenge of heavy rains along the
Mississippi River for organisms in the Gulf of
Mexico?
●
• What happens to fruit when you add sugar?
●
Draw one elodea cell (freshwater plant) after being in saltwater. Label its choloroplast, cell wall, plasma membrane, nucleus, and central vacuole. Which ones are present?
1b) Based on this drawing, which structure is keeping the elodea from going through osmotic lysis in its habitat?
Chapter 7 Solutions
Study Guide for Campbell Biology
Ch. 7 - Label the components in the following diagram of a...Ch. 7 - a. Cite some experimental evidence that indicates...Ch. 7 - List the six major functions that membrane...Ch. 7 - What types of molecules have difficulty crossing...Ch. 7 - A solution of 1 M glucose is separated by a...Ch. 7 - a. What osmotic problems does the freshwater...Ch. 7 - Prob. 7IQCh. 7 - Prob. 8IQCh. 7 - a. How is cholesterol transported into human...Ch. 7 - Create a concept map to illustrate your...
Ch. 7 - The following diagram illustrates passive and...Ch. 7 - If a single layer of phospholipids coats the water...Ch. 7 - Glycoproteins and glycolipids are important for a....Ch. 7 - Prob. 3TYKCh. 7 - Prob. 4TYKCh. 7 - Prob. 5TYKCh. 7 - Use the following U-tube setup to answer questions...Ch. 7 - Use the following U-tube setup to answer questions...Ch. 7 - Use the following U-tube setup to answer questions...Ch. 7 - How much work is expended in diffusion? a. an...Ch. 7 - Prob. 10TYKCh. 7 - Prob. 11TYKCh. 7 - Water passes quickly through cell membranes...Ch. 7 - Facilitated diffusion of ions across a cellular...Ch. 7 - Prob. 14TYKCh. 7 - Which of the following describes cotransport? a....Ch. 7 - Prob. 16TYKCh. 7 - An animal cell moves potassium against its...Ch. 7 - Prob. 18TYKCh. 7 - Prob. 19TYKCh. 7 - In response to low blood pressure, the adrenal...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Compare and contrast the transport mechanisms of plants and animals using the table provided below.arrow_forwardDescribe the mechanism of active transport. Sodium-potassium pump, which moves sodium ions to the outside of the cell and potassium ions to the inside of the cell.arrow_forwardVarious chemical methods can be used to permeabilize or lyse cells including the use of enzymes. List three important factors to consider when developing a lysis method using enzymes. Estimate the osmotic pressure drop across the membrane of an animal cell in a 0.10 M NaCl solution, assuming that the internal total solute concentration is 0.36 osM and temperature is 30.0°C. Do you think that this pressure drop would lyse cells? Why or why not?arrow_forward
- For each scenario, choose which boundary condition would be appropriate. Consider and list what assumptions you might be making. 1.The solute of interest is diffusing towards the cell membrane, where it is binding to surface receptors. 2.Sugar is diffusing from the surface of a dissolving sugar cube. 3.Blood is flowing over an oxygen transport membrane in a blood oxygenator. 4.Nutrients are diffusing away from the epithelium in a capillary bed into the tissue. Describe the boundary where diffusion of solute from one capillary meets that of another if you assume regular spacing of capillaries.arrow_forwardGive what is being asked. Except from plants, what are the other organisms able to produce oxygen?a.b. c. Explain the following: Diffusion Osmosisarrow_forwardWhich of the following comparisons between active and the passive transport systems best describes them? (A) Active transport svstem does not require ATP molecules, while passive •transoort system does (B) Passive transport system does not require ATP molecules, while active transport system does (C) Both the active and the passive transport systems require ATP molecules. (D) Neither the active nor the passive transport system requires ATP molecules.arrow_forward
- 25. For a Paramecium shifted from from a hypo-osmotic to an iso-osmotic environment, you would expect the activity of its contractile vacuole to .... a) increase. b) decrease. c) remain unchanged.arrow_forwardThe image illustrates passive and active transport across the cell membrane. (Use the diagram to answer questions A-D) A. 1. Which section represents facilitated diffusion?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not?5. What type of solute molecules may be moved by this type of transport? B. 1. Which section shows active transport?2. Explain why or how can you tell?3. Does the cell expend energy in this transport?4. Why or why not? C. 1. Which section shows diffusion?2. What type of solute molecules may be moved by this type of transport? D. Which of these sections are considered passive transport? Explain.arrow_forwardGive the Similarities and Differences between the following terms. Make sure to give at least Two Differences: Terms Similarity Difference Endocytosis/Exocytosis Difference Terms Similarity Diffusion/Osmosis Difference Similarity Terms Pinocytosis/Phagocytosisarrow_forward
- Define osmosis; characterize isotonic, hypertonic and hypotonic solutions and what happens to cells, osmotically in each of these environments. State which tonicity is optimal for animal cells and why.arrow_forwardi. Why are carbon, nitrogen, oxygen, and hydrogen the most abundant elements in living matter and, therefore, considered macronutrients? ii. Explain the Fluid Mosaic membrane model of plasma membrane structure. iii. What is the difference between simple diffusion, facilitated diffusion, and active transport? :=arrow_forwardComplete 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.arrow_forward
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