Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 3.2, Problem 3CC
WHAT IF? Ø A water strider (an insect that can walk on water) has legs that are coated with a hydrophobic substance. What might be the benefit? What would happen if the substance were hydrophilic?
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Chapter 3 Solutions
Campbell Biology
Ch. 3.1 - MAKE CONNECTIONS What is electronegativity, and...Ch. 3.1 - WHAT IF? What would be the effect on the...Ch. 3.1 - Why is it unlikely that two neighboring water...Ch. 3.1 - WHAT IF? What would be the effect on the...Ch. 3.2 - Prob. 1CCCh. 3.2 - Prob. 2CCCh. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - WHAT IF? A water strider (an insect that can walk...Ch. 3.2 - Prob. 5CCCh. 3.3 - Compared with a basic Solution at pH 9, the same...
Ch. 3.3 - HCl is a strong acid that dissociates in water:...Ch. 3.3 - Prob. 3CCCh. 3.3 - Prob. 4CCCh. 3 - DRAW IT Label a hydrogen bond and a polar...Ch. 3 - Describe how different types of solutes dissolve...Ch. 3 - Explain what happens to the concentration...Ch. 3 - Which of the following is a hydrophobic material?...Ch. 3 - Prob. 2TYUCh. 3 - Measurements show that the pH of a particuiar lake...Ch. 3 - What is the hydroxide ion concentration of the...Ch. 3 - A slice of pizza has 500 kcal. If we could burn...Ch. 3 - DRAW IT Draw the hydration shells that form around...Ch. 3 - In agricultural areas, farmers pay close attention...Ch. 3 - MAKE CONNECTIONS What do climate change (see...Ch. 3 - EVOLUTION CONNECTION This chapter explains how the...Ch. 3 - Prob. 10TYUCh. 3 - WRITE ABOUT A THEME: ORGANIZATION Several emergent...Ch. 3 - SYNTHESIZE YOUR KNOWLEDGE How do cats drink?...
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- Read This! When phospholipids are added to an aqueous environment (consisting mostly of water) the phospholipid molecules will spontaneously assemble into a phospholipid bilayer where the layers are held together by weak attractive forces between molecules. These structures are often seen in nature as cell and organelle membranes. 12. Consider animal cells, which are only bound by a cell membrane and plant cells which are bound by both a cell membrane and a cell wall. Are cell membranes flexible (fluid)? Provide specific examples to support your answer. 13. Explain why a phospholipid bilayer is flexible. terms of the strength of the forces that hold it together. 14. Refer to Model 1. a. What happens to the shape of the hydrophobic tail in a phospholipid when a double bond is present in the carbon chain? b. Explain why the flexibility (fluidity) of a membrane increases when more of the phospholipids in the layers contain double bonds. 15. The diagram below shows the chemical structure…arrow_forward1. Draw the structure of phosphatidic acid. Circle the polar parts of the molecule and box the non-polar parts of the molecule. 2.Based on the structure why would this molecule be a major building block for glycerophospholipids that make up the cell membrane? In your answer include which part of the molecule would be inside the membrane and which one out and why. 3. What specific “effect”would drive your answer to 2?arrow_forward5. A 70 kg adult could meet her/his entire energy needs for a day by eating 3 moles of glucose (540 g; molecular weight of glucose is 180 g/mol). Each molecule of glucose generates approximately 36 molecules of ATP when oxidized to CO,. The concentration of ATP in cells is about 5mM, and a 70 kg adult has about 25 liters of intracellular fluid. A. Given that the ATP concentration remains constant in cells, calculate how many times per day, on average, each ATP molecule in the body is hydrolyzed and resynthesized. Show calculations.arrow_forward
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