BIOCHEMISTRY II >CUSTOM<
17th Edition
ISBN: 9781337449014
Author: GARRETT
Publisher: CENGAGE C
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Chapter 20, Problem 19P
Interpretation Introduction
Interpretation:
Based on the reading of F1Fo-ATPase, the conclusion about the mechanism of ATP synthesis should be identified from the given options.
Concept Introduction:
In the mechanism of ATP synthesis, the reaction of 18O exchange takes place. An SN2 reaction is given by the hydrolysis of ATP into Pi. The nucleophile then attacks the y phosphorous and then ATP is released.
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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
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(c) AH = +84 kJ mol¹ (+20 kcal mol¯¹), AS = +125 J mol¯¹ K−¹ (+30 cal mol-¹ K-¹)
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-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
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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
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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
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-180
-180
0
➜ (degrees)
180
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