Biochemistry: The Molecular Basis of Life
6th Edition
ISBN: 9780190209896
Author: Trudy McKee, James R. McKee
Publisher: Oxford University Press
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Chapter 16, Problem 6Q
Summary Introduction
To review:
The physiological and biochemical basis for Aretaeus’s finding.
Introduction:
The Greek work diabeinein is the root word from which term diabetes have been derived. The term diabeinein refers “to go to excess” and it was used by Aretaeus for the first time. He defined diabetes as a group of symptoms that involves thirst and liquefaction of limbs and flesh into urine.
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Given the values for the changes in enthalpy (AH) and entropy (AS), which processes can take place at 298 K without
violating the Second Law of Thermodynamics?
(a) AH =
(b) AH = -84 kJ mol¹ (−20 kcal mol¹), AS = -125 J mol-¹ K-¹ (-30 cal mol-¹ K-¹)
(c) AH = +84 kJ mol¹ (+20 kcal mol¯¹), AS = +125 J mol¯¹ K−¹ (+30 cal mol-¹ K-¹)
(d) AH = +84 kJ mol-1 (+20 kcal mol-¹), AS = -125 J mol¯¹ K-¹ (-30 cal mol-¹ K-¹)
-84 kJ mol¹ (-20 kcal mol¹), AS = +125 J mol¯¹ K-¹ (+30 cal mol-¹ K-¹)
What chemical interactions are primarily responsible for the fact that oil and water do not mix easily?
ionic interactions
covalent bonds
hydrogen bonding
Ohydrophobic effect
The carbon-nitrogen peptide bond is rigid, but rotation can take place
about the bond between the nitrogen and α-carbon atoms and the bond
between the α-carbon and the carbonyl carbon atom. These bond angles
define the conformation of the peptide chain.
Consider the Ramachandran plot shown to answer both questions.
(degrees)
180
120
60
60
0
Which observation most likely describes part of an observed a helix?
p=-59 degrees; = +150 degrees; many Ser residues
cp-140 degrees; w = +130 degrees; many Val residues
op-57 degrees; w = -47 degrees; many Pro residues
op-60 degrees; y = -47 degrees; many Ala residues
p = +60 degrees; y = +40 degrees; many Gly residues
-60
-120
-180
-180
0
➜ (degrees)
180
Chapter 16 Solutions
Biochemistry: The Molecular Basis of Life
Ch. 16 - Prob. 1QCh. 16 - Prob. 2QCh. 16 - Prob. 3QCh. 16 - Prob. 4QCh. 16 - Prob. 5QCh. 16 - Prob. 6QCh. 16 - Prob. 7QCh. 16 - Prob. 8QCh. 16 - Prob. 1RQCh. 16 - Prob. 2RQ
Ch. 16 - Prob. 3RQCh. 16 - Prob. 4RQCh. 16 - Prob. 5RQCh. 16 - Prob. 6RQCh. 16 - Prob. 7RQCh. 16 - Prob. 8RQCh. 16 - Prob. 9RQCh. 16 - Prob. 10RQCh. 16 - Prob. 11RQCh. 16 - Prob. 12RQCh. 16 - Prob. 13RQCh. 16 - Prob. 14RQCh. 16 - Prob. 15RQCh. 16 - Prob. 16RQCh. 16 - Prob. 17RQCh. 16 - Prob. 18RQCh. 16 - Prob. 19RQCh. 16 - Prob. 20RQCh. 16 - Prob. 21RQCh. 16 - Prob. 22RQCh. 16 - Prob. 23RQCh. 16 - Prob. 24RQCh. 16 - Prob. 25RQCh. 16 - Prob. 26RQCh. 16 - Prob. 27RQCh. 16 - Prob. 28RQCh. 16 - Prob. 29RQCh. 16 - Prob. 30RQCh. 16 - Prob. 31RQCh. 16 - Prob. 32RQCh. 16 - Prob. 33RQCh. 16 - Prob. 34FBCh. 16 - Prob. 35FBCh. 16 - Prob. 36FBCh. 16 - Prob. 37FBCh. 16 - Prob. 38FBCh. 16 - Prob. 39FBCh. 16 - Prob. 40FBCh. 16 - Prob. 41FBCh. 16 - Prob. 42FBCh. 16 - Prob. 43FBCh. 16 - Prob. 44SACh. 16 - Prob. 45SACh. 16 - Prob. 46SACh. 16 - Prob. 47SACh. 16 - Prob. 48SACh. 16 - Prob. 49TQCh. 16 - Prob. 50TQCh. 16 - Prob. 51TQCh. 16 - Prob. 52TQCh. 16 - Prob. 53TQCh. 16 - Prob. 54TQCh. 16 - Prob. 55TQCh. 16 - Prob. 56TQCh. 16 - Prob. 57TQCh. 16 - Prob. 58TQCh. 16 - Prob. 59TQCh. 16 - Prob. 60TQCh. 16 - Prob. 61TQCh. 16 - Prob. 62TQCh. 16 - Prob. 63TQCh. 16 - Prob. 64TQCh. 16 - Prob. 65TQCh. 16 - Prob. 66TQCh. 16 - Prob. 67TQCh. 16 - Prob. 68TQCh. 16 - Prob. 69TQCh. 16 - Prob. 70TQCh. 16 - Prob. 71TQCh. 16 - Prob. 72TQCh. 16 - Prob. 73TQCh. 16 - Prob. 74TQCh. 16 - Prob. 75TQ
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