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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Students have asked these similar questions
Using the appropriate osmotic terms (hypertonic, hypotonic, or isotonic) describe what would happen to each organism in the following settings:
A single-celled freshwater protist is placed into a beaker of salt water.
A salt-water snail is mistakenly put into a freshwater tank.
A head of lettuce is placed soaked in a sink of salt water.
A carrot is soaked a sink of distilled, pure water.
1) If an animal cell is placed in HYPERTONIC solution, what happens to the cell?
nothing happens
cell swells and burst
shrinks from the water loss
solute moves in and out2) True or False: Hypotonic solution means more solute and less water.
True
False
Maybe
3) In an isotonic solution which way will the water flow
out of the cell
into the cell
will flow both ways at equal rate
none of the above
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
!!!
lili
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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- Which 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_forwardIn which situation would passive transport not use a transport protein for entry into a cell? water flowing into a heypertonic environment an ion flowing into a nerve cell to create an electrical potential glucose being absorbed from the blood oxygen moving into a cell after oxygen deprivationarrow_forward
- You said that " However, if the salinity level is too extreme or the exposure is prolonged, it could lead to cellular damage and potentially death. In summary, while marine mussels are adapted to live in a hypertonic environment and are osmoregulators, exposure to extremely high salinity levels could still be harmful to them." Where are you finding this I can't seem to find this on the internet do you have a research paper to show this. Thank you for your help and timearrow_forwardidentify which of the following pictures depicts passive transport and which one portryas active transport. Also interpret each picture, so you can identify the distinct feauture of the 2 major transport mechanisms. THANK YOUU!!❤️arrow_forwardWhich of the following is true of the flagellum in eukaryotes? It is a long, thin extracellular (exterior) structure, with a basal motor embedded in the cell membrane/cell wall. It is identical to the archaeal flagellum (archaellum) in composition and structure, but very different in composition and structure from bacterial flagella. It is a long, thin structure containing bundles of microtubules and motor proteins, all within the plasma membrane. Eukaryotic cells do not possess flagella.arrow_forward
- 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?arrow_forwardHow come c) is the answer? Wouldn't the fresh water be a hypertonic solution because it would allow water to osmose out of the celery stalk and would make it 'harder' as there is less water?arrow_forwardWhat Osmotic conditions would be favored by Plant and Animal cells? Why? Explain what is meant by the Fluid Mosaic Model of Membrane Structure. What are the various functions of membrane proteins? Explain the different forms of membrane transport: Passive, Facilitated, Active. Describe the bulk transport mechanisms of Endocytosis and Exocytosis.arrow_forward
- quick answers to mc pleasearrow_forwardSuppose you have a cell from a freshwater fish that is isotonic with its surrounding environment, with a K+ concentration inside the cell of 0.05M. You then immerse this cell in saltwater where the K+ concentration is 0.25M. What would you predict will happen to the cell? a)Water will move into the cell, and the cell will swell and burst b)Water will move out of the cell, and the cell will shrink c)Water will move in and out of the cell with no net change in concentration, and the cell will remain the same size d)The cell wall will prevent the cell from changing sizearrow_forward# 27: What is the specific name given to these organism's thickened plasma membrane? #28: What is the function of the red structure at the tip of the arrows.arrow_forward
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