CAMPBELL BIOL UMD+MASTERBIO ACCESS >BI
CAMPBELL BIOL UMD+MASTERBIO ACCESS >BI
10th Edition
ISBN: 9781269920483
Author: Reece
Publisher: PEARSON C
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Chapter 7.1, Problem 2CC

WHAT IF? Ø How would the membrane lipid composi­tion of a native grass found in very warm soil around hot springs compare with that of a native grass found in cooler soil? Explain.

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WHAT IF? Given a liter of pure water and a liter solution of acetic acid, what would happen to the pH, ingeneral, if you added 0.01 mol of a strong acid to each?Use the reaction from question 3 to explain the result.
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?
i just answered a hw question that i was a little confused on. i answered it but am not fully sure if it's correct. so can you take a look at check if my answer is correct and if it's not, then a explaintion would be helpful.  Would you expect water molecules to move faster when there is a HIGH concentration gradient or a LOW concentration gradient?   Water molecules would move faster when there is a high concentration gradient because the pressure for the molecules in the high concentration to reach equilibrium increases since there are more molecules there than in the low concentration. So as the molecules move down the concentration gradient faster to equalize the concentration on both sides due to the increased pressure, the rate of diffusion increases.

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