Biochemistry: Concepts and Connections (2nd Edition)
2nd Edition
ISBN: 9780134641621
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Chapter 12, Problem 12P
Write a pathway leading from glucose to lactose in mammary gland, and write a balanced equation for the overall pathway.
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Write a balanced equation for the synthesis of phosphatidylethanolamine by the de novo pathway, starting from ethanolamine, glycerol, and fatty acids.
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b. enzyme that is only present in the liver and kidney during glycogen utilization
c. enzyme that catalyzes the transfer of a two-carbon fragment from a ketose donor to an aldose acceptor in PPP
Chapter 12 Solutions
Biochemistry: Concepts and Connections (2nd Edition)
Ch. 12 - Prob. 1PCh. 12 - Methanol is highly toxic, not because of its own...Ch. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Write balanced chemical equations for each of the...Ch. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Prob. 10P
Ch. 12 - Some anaerobic bacteria use alternative pathways...Ch. 12 - Write a pathway leading from glucose to lactose in...Ch. 12 - Prob. 13PCh. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - How many ATP equivalents are consumed in the...Ch. 12 - Prob. 17PCh. 12 - Avidin is a protein that binds extremely tightly...Ch. 12 - 14CO2 was bubbled through a suspension of liver...Ch. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - 24. Glycogen synthesis and breakdown are regulated...Ch. 12 - Prob. 25PCh. 12 - Prob. 26PCh. 12 - Prob. 27PCh. 12 - Prob. 28PCh. 12 - 29 [1-14C] Ribose-5-phosphate is incubated with a...Ch. 12 - Prob. 30PCh. 12 - Prob. 31PCh. 12 - Prob. 32PCh. 12 - Prob. 33P
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- The urea cycle can be summarized through the following reaction: O || H₂N-C-OPO3= COO- | H3N-CHCH₂COO- O || H₂N-C-NH2 + -OOCCH = CHCOO- 1. Write the reactions, using structural formulas that lead to the formation of carbamoyl phosphate and its subsequent incorporation into the urea cycle. Name the enzymes and how they are activated.arrow_forwardThe final step in the pathway for the synthesis of glucose from lactate (gluconeogenesis) is: Glucose-6-phosphate + H20 5 Glucose + Pi When glucose-6-phosphate is incubated with the proper enzyme and the reaction runs until equilibrium has been reached, the final concentrations are found to be: glucose-6-phosphate (0.035 mM), glucose (100 mM), and Pi (100 mM). Calculate AG" at 25°C and pH 7. 10:21 PM 4/21/2021 F5 F6 F7 F8 F10 F9 7 8. Backspace ー のarrow_forwardIdentify the enzyme that carry out the below reaction and denotes the nature of the enzyme? UDP-galactose + N-acetylglucosamine ~ UDP + N-acetyllactosaminearrow_forward
- Write an equation for the net reaction of the urea cycle.Show how the urea cycle is linked to the citric acid cycle.arrow_forwardAn L-amino acid oxidase in mammalian peroxisomes requires H2O and O2 as substrates and catalyzes amino acid deamination, producing H2O2 as a product. Write a balanced equation for the reaction.arrow_forwardWrite the rest of the reactions that constitute the urea cycle using structural formulas. Name the enzymes that catalyze each reaction. Indicate which reactions occur in the mitochondrion and which occur in the cytoplasm.arrow_forward
- Tyrosinase enzyme activity is assayed by monitoring the oxidation of 3, 4-dihydroxyphenylalanine (dopa) to the red-colored dopachrome. Calculate the tyrosinase activity (U/mL) by using the experimental data given belowarrow_forwardWrite out a complete mechanism for the conversion of serine into aminoacrylate catalyzed by serine dehydratase.arrow_forwardExplain why, glucose-6-phosphate will prefer to go via the pentose phosphate route. What additional chemical is created by this route, and what role does it play in anabolic pathways?arrow_forward
- Outline the path of 2 molecules of alanine to 1 molecule of glucose using alanine dehydrogenase and other processes or pathways you know. Determine the net reaction and make sure you include both the necessary cofactors AND the handling of the ammonia by the urea cycle.arrow_forwardWrite a balanced equation for the synthesis of PRPP from glucose through the oxidative branch of the pentose phosphate pathway.arrow_forwardWrite out a mechanism for the serine triad hydrolysis ofglycylglycine.arrow_forward
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