Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 5, Problem 9TYU
FOCUS ON EVOLUTION
Paramecium and other unicellular eukaryotes that live in hypotonic environments have cell membranes that limit water uptake, while those living in isotonic environments have membranes that are more permeable to water. Describe what water regulation adaptations might have evolved in unicellular eukaryotes in hypertonic habitats such as the Great Salt Lake and in habitats with changing salt concentration.
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Explain osmotic balance in cells. What happens to a cell that is placed in a hypotonic solution, hypertonic solution, or isotonic solution? What is special about the maintenance of osmotic balance in halophiles that would allow them to survive in high salt concentrations? What is the natural habitat of archaea species Halobacterium salinarum?
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Passive transport *
Is when an ion flows down a gradient to enter or exit a cell
Does not require energy
Is facilitated by ATP
Can use ion channels
If a cell is hypotonic *
it could shrivel up
it is at equilibrium
it could swell and burst
all of the above
What does hypertonic mean? *
Chapter 5 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 5.1 - Plasma membrane proteins have carbohydrates...Ch. 5.1 - WHAT IF? How would the membrane lipid composition...Ch. 5.2 - What property allows O2 and CO2, to cross a lipid...Ch. 5.2 - Why is a transport protein needed to move many...Ch. 5.2 - MAKE CONNECTIONS Aquaporins exclude passage of...Ch. 5.3 - How do you think a cell performing cellular...Ch. 5.3 - WHAT IF? If a Paramecium caudatum cell swims from...Ch. 5.4 - Sodium-potassium pumps help nerve cells establish...Ch. 5.4 - Prob. 2CCCh. 5.4 - MAKE CONNECTIONS Review the characteristics of the...
Ch. 5.5 - As a cell grows, its plasma membrane expands. Does...Ch. 5.5 - Prob. 2CCCh. 5.5 - MAKE CONNECTIONS In Concept 4.7, you learned that...Ch. 5.6 - During an epinephrine-initiated signal in liver...Ch. 5.6 - When a signal transduction pathway involves a...Ch. 5.6 - WHAT IF? How can a target cells response to a...Ch. 5 - In what way do the membranes of a eukaryotic cell...Ch. 5 - Which of the following factors would tend to...Ch. 5 - Phosphorylation cascades involving a series of...Ch. 5 - Lipid-soluble signaling molecules, such as...Ch. 5 - Which of the following processes includes all the...Ch. 5 - Based on Figure 5.17.which of these experimental...Ch. 5 - Prob. 7TYUCh. 5 - SCIENCE, TECHNOLOGY, AND SOCIETY Extensive...Ch. 5 - FOCUS ON EVOLUTION Paramecium and other...Ch. 5 - FOCUS ON INTERACTIONS A human pancreatic cell...Ch. 5 - SYNTHESIZE YOUR KNOWLEDGE In the supermarket,...
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- The following diagram shows the effect of osmotic concentration on a plant cell. Using the terms isotonic, hypertonic and hypotonic identify what is happening in each cell and state what each term means and which cell it applies to. Plant cells cell wall -nucleus cell membrane -central vacuole -chloroplast Paragraph B I U v A !!! liliarrow_forwardWhich of the following membrane-crossing mechanisms requires energy? Active transport Facilitated diffusion Simple diffusion Passive transport Turgorarrow_forwardInvestigating 2 newly discovered unicellular species. Species 1 was isolated from the hot springs with an average water temperature of 92 degrees Celsius. Species 2 was isolated with an average water temperature of 8 degrees Celsius. You extract and measure the amount of desaturase protein from both species. State what you expect to observe with regards to desaturase levels in Species 2 compared to Species 1. (Refer to membrane fluidity and include an explanation of the differences in the structure of fatty acid chains).arrow_forward
- SECTION rs of Lab Section: 3.3 FUNGUS-LIKE PROTISTS Answer the following questions: v. 20231 What is a possible function of cytoplasmic streaming in the slime mold? To help distribute and redistribute nutrient throughout organism. Hypothesize as to how you think the living slime mold plasmodium (feeding stage) would react if you warm it up by leaving it on your microscope stage under high illumination for about 30 minutes? thearrow_forwardParamecia live mostly in freshwater and move with the use of structures called cilia. They utilize contractile vacuoles to expel water that enters the cell by osmosis. Euglena are unicellular organisms that use flagella for movement and chloroplasts for photosynthesis. They are found in freshwater and saltwater. Scientists have determined that Paramecia and Euglena are eukaryotes and not prokaryotes because they havearrow_forwardName the organism in this picture . What does it use for locomotion? Eukaryote or prokaryote? What does it use to regulate water concentration in the cell? Name the parts of this cellarrow_forward
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