Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 25, Problem 14P
Interpretation Introduction
To write:
About the affects of herbicide roundup on plant
Introduction:
The inhibition of 3-enolpyruvylshikimate-5-phosphate synthase by glyphosate ends up in the generation of a compound that forms chorismate. The formation of chorismate happens through the shikimate pathway, that ends up in the assembly of the intermediates phosphoenolpyruvate
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There is another class of aldolase enzymes known as Class II. These enzymes are found in fungi, algae, and some bacteria. This class differs for Class I in that these enzymes do not have a Lys residue associated with their active sites, but contain a divalent cation (usually Zn2+ or Fe2+) in the active site. Outline a possible mechanism for a Class II aldolase and explain the function of the metal ion in the reaction.
When grown anaerobically on glucose, yeast (S. cerevisiae) converts pyruvate to acetaldehyde, then reduces acetaldehyde to
Pethanol using electrons from NADH.
Write the chemical equation for the reaction that reduces acetaldehyde (CH3CHO) to ethanol (CH3CH2OH).
The table provides the standard reduction potential, E', of the relevant half-reactions.
Half-reaction
Acetaldehyde + 2 H+ + 2e¯ → ethanol
NAD+ + 2H+ + 2e¯ → NADH + H+
E'° (V)
-.197
-.320
Calculate the equilibrium constant, K'eq, at 25.0 °C for the reaction that reduces acetaldehyde to ethanol.
K'e
×10
=
eq
In order to function as an oxidative phosphorylation uncoupler
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implication of this conclusion.
Chapter 25 Solutions
Biochemistry
Ch. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - Regulation of Glutamine Synthetase by Covalent...Ch. 25 - The Energetic Cost of Nitrogen Excretion via the...Ch. 25 - Prob. 5PCh. 25 - Prob. 6PCh. 25 - Prob. 7PCh. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10P
Ch. 25 - Prob. 11PCh. 25 - Prob. 12PCh. 25 - Prob. 13PCh. 25 - Prob. 14PCh. 25 - Prob. 15PCh. 25 - A Deficiency on 3-Phosphogtycerate Dehydrogenase...Ch. 25 - Prob. 17PCh. 25 - Prob. 18PCh. 25 - Prob. 19PCh. 25 - Consider the synthesis and degradation of tyrosine...Ch. 25 - Prob. 21PCh. 25 - Prob. 22P
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