Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 3.1, Problem 1CC
MAKE CONNECTIONS Ø What is electronegativity, and how does it affect interactions between water molecules? (Review Figure 2.11.)
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MAKE CONNECTIONS Aquaporins exclude passage ofhydronium ions (H3O+), but some aquaporins allow passage of glycerol, a three-carbon alcohol (see Figure 5.9),as well as H2O. Since H3O+is closer in size to water thanglycerol is, yet cannot pass through, what might be thebasis of this selectivity?
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Please ASAP. Thanku.
Explain in detail why water molecules are polar. Your explanation can be as long as you wish. Your answer must be in your own words. Your answer must include the following terms: Polar, polar covalent bonds, electronegativity, oxygen, hydrogen, partial positive, partial negartive, electrons.
Chapter 3 Solutions
Campbell Biology (11th Edition)
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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- What are some properties of water that result from hydrogen bonding? How do these properties contribute to the role of water as an essential component of organisms?arrow_forwardExplain how hydrogen bonds between adjacent water molecules govern many of the properties of water.arrow_forwardTest Your Understanding Apply and Analyze 14. Consider the following reaction (in water): HCl H+ + Cl Name the reactant(s) and product(s). Does the expression indicate that the reaction is reversible? Could HCl be used as a buffer?arrow_forward
- VISUAL SKILLS Look at Figure 3.2 and explain whythe central water molecule can hydrogen bond to four(rather than three or five) other water molecules.arrow_forward. MAKE CONNECTIONS How are the Casparian strip andtight junctions similar (see Figure 6.30)?arrow_forwardWHAT IF? How would the membrane lipid composition of a native grass found in very warm soil aroundhot springs compare with that of a native grass foundin cooler soil? Explain.arrow_forward
- VOLUTION CONNECTION This chapter explains how theemergent properties of water contribute to the suitabilityof the environment for life. Until fairly recently, scientistsassumed that other physical requirements for life includeda moderate range of temperature, pH, atmospheric pressure,and salinity, as well as low levels of toxic chemicals. Thatview has changed with the discovery of organisms knownas extremophiles, which have been found flourishing inhot, acidic sulfur springs, around hydrothermal ventsdeep in the ocean, and in soils with high levels of toxicmetals. Why would astrobiologists be interested in studyingextremophiles? What does the existence of life in suchextreme environments say about the possibility of life onother planets?arrow_forwardDistinguish among covalent bonds, ionic bonds, hydrogen bonds, and van der Waals interactions. Compare them in terms of the mechanisms by which they form and their relative strengths.arrow_forwardChemistry LLNSAMSRLYSLRSS 1.Assuming this sequnce is enitrely alpha helical what is the hydrogen bond donor to the carbonyl oxygen of Met6? 2.what amino acids in the sequnce above would most likely face the hydrophoic core od a protein? 3. at ph7 which amino acid side chain can form ionic bondsarrow_forward
- Chemistry 1. Calculate isoelectric point of asp, leu, tyr, his and lys. 2. Why do the pK values of ionizable groups differ between free amino acids and amino acid residues in polypeptides? 3. List some covalent modifications of amino acids in proteins. 4. generic amino acid and identify the α carbon and its substituents.arrow_forwardPredict polarity of molecules using electronegativity and molecular geometry (VsePr).arrow_forwardChemistry INEPT1)What happened in the first 90 degree pulse ?2)What does anti-phase magnetization?(use product operator)3)When coherance transfer occur ?4)What coherances can be observed.arrow_forward
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