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 5, Problem 10TYU
FOCUS ON INTERACTIONS
A human pancreatic cell obtains O2—and necessary molecules such as glucose, amino acids, and cholesterol—from its environment, and it releases CO2 as a waste product. In response to hormonal signals, the cell secretes digestive enzymes. It also regulates its ion concentrations by exchange with its environment. Based on what you have just learned about the structure and function of cellular membranes, write a short essay (100-150 words) to describe how such a cell accomplishes these interactions with its environment.
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Cholesterol has which of the following effects on the plasma membrane of an animal cell?
it makes the membrane more rigid at low temperatures, and more fluid at high temperatures
it makes the membrane more rigid at both low temperatures and high temperatures
it makes the membrane more fluid at high temperatures, and more rigid at low temperatures
it makes the membrane more fluid at both high temperatures and low temperatures
it makes the membrane more fluid at low temperatures, and more rigid at high temperatures
Zarchi Hlaing: Attempt 1
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Question 17 (1 point)
Match each membrane molecule with its corresponding description.
[Each choice will be used exactly once.]
Can serve as transport
channels.
Help animal cell
membranes maintain
1. Phospholipids
fluidity.
2. Carbohydrates
Combine with other
molecules to make cell
3. Proteins
surface markers that
identify self from non-self.
4. Cholesterol
Lipid that can be described
as saturated or
unsaturated.
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Please answer this question in your own words:
Explain how energy is invested, stored, and released via chemical reactions? Describe the structure and molecular makeup of the cell membrane? Name 3 mechanisms that cells use to transport and regulate materials into and outof the cell? Describe the functions of at least 4 different cytoplasmic organelles? What is the difference between Hypertonic, Hypotonic and Isotonic solutions? How are free radicals formed in the body?
Chapter 5 Solutions
Campbell Biology in Focus
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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