Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
8th Edition
ISBN: 9780135213759
Author: John McMurry, David Ballantine
Publisher: PEARSON+
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Chapter 13, Problem 13.79CP
Ocimene, a compound isolated from the herb basil, has three double bonds and the IUPAC name 3,7-dimethyl-l, 3-6-octatriene.
(a) Draw its structure.
(b) Draw the structure of the compound formed if enough HBr is added to react with all the double bonds in ocimene.
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The phosphorylation of glucose to glucose 6-phosphate is the initial step in the catabolism of glucose. The direct
phosphorylation of glucose by P, is described by the equation
Glucose + P
←
glucose 6-phosphate + H₂O
AG = 13.8 kJ/mol
Coupling ATP hydrolysis to glucose phosphorylation makes thermodynamic sense, but consider how the coupling might
take place.
Given that coupling requires a common intermediate, one conceivable mechanism is to use ATP hydrolysis to raise the
intracellular concentration of Pi. The increase in P; concentration would drive the unfavorable phosphorylation of glucose by Pi-
Is increasing the P; concentration a reasonable way to couple ATP hydrolysis and glucose phosphorylation?
No. The phosphate salts of divalent cations would be present in excess and precipitate out.
Yes. Increasing the concentration of P; would decrease K'eq and shift equilibrium to the right.
Yes. The extra ATP hydrolysis would provide enough free energy to drive the…
The phosphorylation of glucose to glucose 6-phosphate is the initial step in the catabolism of glucose. The direct
phosphorylation of glucose by P, is described by the equation
Glucose + P → glucose 6-phosphate + H₂O AG' = 13.8 kJ/mol
In principle, at least, one way to increase the concentration of glucose 6-phosphate (G6P) is to drive the equilibrium reaction to
the right by increasing the intracellular concentrations of glucose and Pj.
The maximum solubility of glucose is less than 1 M, and the normal physiological concentration of G6P is 250 μM. Assume a
fixed concentration of P, at 4.8 mM. The calculated value of K'cq is 4.74 × 10-³ M-¹.
Calculate the intracellular concentration of glucose when the equilibrium concentration of glucose 6-phosphate is 250 μM, the
normal physiological concentration.
[glucose] =
10.99
Correct Answer
Would increasing the concentration of glucose be a physiologically reasonable way to increase the concentration
of G6P?
No. Because the concentration of P,…
Calculate the equilibrium constant for the phosphorylation of glucose to glucose 6-phosphate at 37.0 °C.
K'eq =
M-'
In the rat hepatocyte, the physiological concentrations of glucose and P, are maintained at approximately 4.8 mM. What is the
equilibrium concentration of glucose 6-phosphate (G6P) obtained by the direct phosphorylation of glucose by P.?
[G6P] =
Does this reaction represent a reasonable metabolic step for the catabolism of glucose? Why or why not?
Yes, because the value of AG" is positive.
No, because the K'eq is too large for the reaction to proceed in the forward direction.
Yes, because AG is negative at the calculated value of K'eq
No, because [G6P] is likely to be higher than the calculated value.
M
Chapter 13 Solutions
Pearson eText Fundamentals of General, Organic, and Biological Chemistry -- Instant Access (Pearson+)
Ch. 13.2 - Prob. 13.1PCh. 13.2 - Prob. 13.2PCh. 13.2 - What are the IUPAC names of the two alkenes shown...Ch. 13.3 - Prob. 13.4PCh. 13.3 - Prob. 13.5PCh. 13.3 - Prob. 13.6KCPCh. 13.5 - Prob. 13.7PCh. 13.5 - Many biological transformations can be simply...Ch. 13.5 - (a) After the reaction of 11-cis-retinal with...Ch. 13.5 - Prob. 13.2CIAP
Ch. 13.5 - Prob. 13.3CIAPCh. 13.6 - Prob. 13.9PCh. 13.6 - Prob. 13.10PCh. 13.6 - Prob. 13.11PCh. 13.6 - Prob. 13.12PCh. 13.6 - Prob. 13.13PCh. 13.6 - Prob. 13.14KCPCh. 13.6 - Prob. 13.1MRPCh. 13.6 - Prob. 13.2MRPCh. 13.6 - Prob. 13.3MRPCh. 13.7 - Prob. 13.15PCh. 13.7 - Prob. 13.16PCh. 13.8 - Prob. 13.17PCh. 13.8 - Polychlorotrifluoroethylene (PCTFE (Kel-F)) is a...Ch. 13.9 - Prob. 13.19PCh. 13.9 - Prob. 13.20PCh. 13.9 - Prob. 13.21KCPCh. 13.10 - What products will be formed when toluene is...Ch. 13.10 - Prob. 13.23PCh. 13.10 - Prob. 13.4CIAPCh. 13.10 - Prob. 13.5CIAPCh. 13.10 - Prob. 13.6CIAPCh. 13 - Prob. 13.24UKCCh. 13 - Prob. 13.25UKCCh. 13 - Prob. 13.26UKCCh. 13 - Draw the product from reaction of the following...Ch. 13 - Prob. 13.28UKCCh. 13 - Prob. 13.29UKCCh. 13 - Prob. 13.30APCh. 13 - Prob. 13.31APCh. 13 - What family-name endings are used for alkenes,...Ch. 13 - Prob. 13.33APCh. 13 - Prob. 13.34APCh. 13 - Write structural formulas for compounds that meet...Ch. 13 - Prob. 13.36APCh. 13 - Prob. 13.37APCh. 13 - Draw structures corresponding to the following...Ch. 13 - Draw structures corresponding to the following...Ch. 13 - Seven alkynes have the formula C6H10. Draw them,...Ch. 13 - Prob. 13.41APCh. 13 - Prob. 13.42APCh. 13 - There are four different pentenes having the...Ch. 13 - Prob. 13.44APCh. 13 - Prob. 13.45APCh. 13 - Draw line structures for the following alkenes....Ch. 13 - Which compound(s) in Problem 13.43 can exist as...Ch. 13 - Prob. 13.48APCh. 13 - Prob. 13.49APCh. 13 - Which of the following pairs are isomers, and...Ch. 13 - Prob. 13.51APCh. 13 - Prob. 13.52APCh. 13 - Prob. 13.53APCh. 13 - Prob. 13.54APCh. 13 - Prob. 13.55APCh. 13 - Prob. 13.56APCh. 13 - Prob. 13.57APCh. 13 - Prob. 13.58APCh. 13 - Prob. 13.59APCh. 13 - What alkene could you use to make the following...Ch. 13 - Prob. 13.61APCh. 13 - Prob. 13.62APCh. 13 - Prob. 13.63APCh. 13 - Prob. 13.64APCh. 13 - For each of the following reagents, decide whether...Ch. 13 - Prob. 13.66APCh. 13 - Prob. 13.67APCh. 13 - Prob. 13.68APCh. 13 - Salicylic acid (o-hydroxybenzoic acid) is used as...Ch. 13 - The following names are incorrect by IUPAC rules....Ch. 13 - Prob. 13.71CPCh. 13 - Prob. 13.72CPCh. 13 - Prob. 13.73CPCh. 13 - Prob. 13.74CPCh. 13 - Menthene, a compound found in mint plants, has the...Ch. 13 - Prob. 13.76CPCh. 13 - Prob. 13.77CPCh. 13 - Two products are possible when 2-pentene is...Ch. 13 - Ocimene, a compound isolated from the herb basil,...Ch. 13 - Describe how you could prepare the following...Ch. 13 - Which of the following compounds are capable of...Ch. 13 - Prob. 13.82GPCh. 13 - Superglue is an alkene polymer made from the...Ch. 13 - Draw all possible C5H10 alkene isomers having a...
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