Biochemistry: Concepts and Connections
1st Edition
ISBN: 9780321839923
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 16P
It is possible to make a buffer that functions well near pH 7 using citric acid, which contains only carboxylate groups. Explain
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7. Which one is the major organic product obtained from the following reaction?
CHO
COOH
CH₂OH
CHO
COOH
H-
-OH
H₂
H-
OH
H-
-OH
H-
-OH
Ni
HO
-H
HO
-H
HO-
-H
HO-
H
HO-
H
H-
-OH
H-
-OH
H-
-OH
H
-OH
H-
-OH
H-
-OH
H-
-OH
H-
-OH
H-
-OH
H
-OH
CH₂OH
CH₂OH
CH₂OH
CH₂OH
COOH
A
B
C
D
4. The compound on the right is-
B) a ketopentose C) an aldohexose
A) an aldopentose
D) a ketohexose
E) a ketoheptose
OH OH
CH2OH
OH
12. When glutamic acid is heated to 180°C., it loses a molecule of water to form a
lactam. The bond that creates the lactam is an amide bond that forms between the
amino nitrogen and the carbon of the side chain -COOH group. What is the most
reasonable structure for this lactam? (NOTE: The structure of glutamic acid is shown
in Question 1.)
COOH
COOH
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C
D
COOH
B
COOH
E
COOH
Chapter 2 Solutions
Biochemistry: Concepts and Connections
Ch. 2 - Suppose a chloride ion and a sodium ion are...Ch. 2 - Draw two different possible hydrogen-bonding...Ch. 2 - Prob. 3PCh. 2 - 4. What is the pH of each of the following...Ch. 2 - Prob. 5PCh. 2 - The weak acid HA is 2% ionized (dissociated) in a...Ch. 2 - 7. Calculate the pH values and draw the titration...Ch. 2 - What is the pH of the following buffer mixtures?...Ch. 2 - a. Suppose you wanted to make a buffer of exactly...Ch. 2 - Prob. 10P
Ch. 2 - You need to make a buffer whose pH is 7.0, and you...Ch. 2 - Describe the preparation of 2.00 L of 100 glycine...Ch. 2 - Carbon dioxide is dissolved in blood (pH 7.4) to...Ch. 2 - What is the molecular basis for the observation...Ch. 2 - The anno acid arginine ionizes according to the...Ch. 2 - It is possible to make a buffer that functions...Ch. 2 - A student is carrying out a biological preparation...Ch. 2 - Histidine is an amino acid with three titratable...Ch. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21P
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