Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 17RE
RECALL Which of the following lipids are not found in animal membranes?
(a) Phosphoglycerides
(b) Cholesterol
(c) Triacylglycerols
(d) Glycolipids
(e) Sphingolipids
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From the reaction data below, determine whether the reaction is first order or second order and calculate the rate constant.
Time (s)
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5.4
1
4.6
2
3.9
3
3.2
4
2.7
5
2.3
Only a plot of In[reactant] versus t gives a straight line, so the reaction is
first order
. The negative of the slope, k, is
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Hair grows at a rate of about 20 cm/yr. All this growth is concentrated at the base of the hair fiber, where a-keratin filaments are
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flament
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0422
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Specific rotation is a measure of a solution's capacity to rotate circularly polarized light. The unfolding of the a helix of a
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pH to 7, there is a large decrease in the specific rotation of the solution. Similarly, polylysine (1.-Lys residues) is an a helix at pH
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a Helix
Specific rotation
Poly(Glu)
a Helix
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Poly(Lys)
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T
+
°
2
4
6 В
10 12 14
PH
Complete the statements about the molecular mechanism for these changes in specific rotation.
Increasing the pH of a polyglutamate solution from 6 to 7 causes the carboxyl group of each glutamate residue
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Chapter 8 Solutions
Biochemistry
Ch. 8 - RECALL Proteins, nucleic acids, and carbohydrates...Ch. 8 - RECALL What structural features do a...Ch. 8 - RECALL Draw the structure of a phosphoacylglycerol...Ch. 8 - RECALL What structural features do a sphingomyelin...Ch. 8 - RECALL You have just isolated a pure lipid that...Ch. 8 - RECALL What structural features does a...Ch. 8 - RECALL Write the structural formula for a...Ch. 8 - RECALL How does the structure of steroids differ...Ch. 8 - Prob. 9RECh. 8 - REFLECT AND APPLY Which is more hydrophilic,...
Ch. 8 - Prob. 11RECh. 8 - REFLECT AND APPLY Succulent plants from arid...Ch. 8 - REFLECT AND APPLY In the produce department of...Ch. 8 - REFLECT AND APPLY Egg yolks contain a high amount...Ch. 8 - REFLECT AND APPLY In the preparation of sauces...Ch. 8 - REFLECT AND APPLY When water birds have had their...Ch. 8 - RECALL Which of the following lipids are not found...Ch. 8 - RECALL Which of the following statements is (are)...Ch. 8 - REFLECT AND APPLY Why might some food companies...Ch. 8 - Prob. 20RECh. 8 - BIOCHEMICAL CONNECTIONS Crisco is made from...Ch. 8 - BIOCHEMICAL CONNECTIONS Why does the American...Ch. 8 - REFLECT AND APPLY In lipid bilayers, there is an...Ch. 8 - Prob. 24RECh. 8 - REFLECT AND APPLY Suggest a reason why the cell...Ch. 8 - REFLECT AND APPLY Suggest a reason why animals...Ch. 8 - REFLECT AND APPLY What is the energetic driving...Ch. 8 - Prob. 28RECh. 8 - RECALL How can fluorescence techniques be used to...Ch. 8 - Prob. 30RECh. 8 - Prob. 31RECh. 8 - REFLECT AND APPLY A membrane consists of 50%...Ch. 8 - REFLECT AND APPLY Suggest a reason why the same...Ch. 8 - REFLECTANDAPPLY Suppose that you are studying a...Ch. 8 - REFLECT AND APPLY Which statements are consistent...Ch. 8 - RECALL What role does phosphorylation of tyrosine...Ch. 8 - Prob. 37RECh. 8 - REFLECT AND APPLY Suggest a reason why inorganic...Ch. 8 - REFLECT AND APPLY Which statements are consistent...Ch. 8 - RECALL What happens to the human growth hormone...Ch. 8 - Prob. 41RECh. 8 - RECALL What is the structural relationship between...Ch. 8 - Prob. 43RECh. 8 - RECALL What are isoprene units? What do they have...Ch. 8 - Prob. 45RECh. 8 - Prob. 46RECh. 8 - Prob. 47RECh. 8 - Prob. 48RECh. 8 - Prob. 49RECh. 8 - Prob. 50RECh. 8 - REFLECT AND APPLY A health-conscious friend asks...Ch. 8 - Prob. 52RECh. 8 - Prob. 53RECh. 8 - Prob. 54RECh. 8 - REFLECT AND APPLY List two classes of compounds...Ch. 8 - BIOCHEMICAL CONNECTIONS Outline a possible...
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