Select the INCORRECT statement amino acid biosynthesis. O a. The amino group of each amino acid usually comes from glutamate Ob. The amino group of each amino acid usually comes from a-ketoglutarate Oc There are Six biosynthetic families of amino acids based on common precursors Od. All amino acids obtain their carbon skeletons from a glycolysis intermediate, a citric acid cycle intermediate, or a phosphogluconat pathway intermediate

Select the INCORRECT statement amino acid biosynthesis. O a. The amino group of each amino acid usually comes from glutamate Ob. The amino group of each amino acid usually comes from a-ketoglutarate Oc There are Six biosynthetic families of amino acids based on common precursors Od. All amino acids obtain their carbon skeletons from a glycolysis intermediate, a citric acid cycle intermediate, or a phosphogluconat pathway intermediate

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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In the first cycle of fatty acid synthesis via the acyl carrier protein system, the acetyl group on fatty acid synthase condenses with the malonyl-ACP complex. Draw the structure of the products of this reaction. Respresent ACP by R1 do not include free synthase Be sure to include charges on atoms at Ph=7
Palmitoleic acid, 16:1Δ⁹ hexadecaenoic acid, (16 carbon FA with one double bond )is an important fatty acid component of TAGs and cell membranes. Briefly explain the process of beta oxidation of this fatty acid and the number (only) of FADH, NADH and acetyl CoA outcome. What is the total ATP (only number) generated from this fatty acid after beta oxidation.
SH CH2 CH2 NH This structure plays an important role in the synthesis of H CH3 C-CH,-CH,-N-C-c-c-CH2-0- O glycogen from glucose 6-phosphate. O fatty acids from acetyl coenzyme A O glucose from pyruvate. CO glyceraldehyde 3-phosphate from fructose. O ATP from ADP and inorganic phosphate.
Select the BEST answer. Increasing the concentration of Fructose-2,6 bisphosphate would Inhibit Phosphofructokinase 2 Increase the concentration of Fructose-1,6 bisphosphate (phosphofructose isomerase) O increase the synthesis of glycogen Increase the carboxylation of Ac-CoA to make more malonyl-CoA increase the concentration of Pyruvate
Identify a pathway for utilization of the four carbons of acetoacetate in cholesterol biosynthesis. Carry your pathway as far as the rate-determining reaction in cholesterol biosynthesis. Drag the appropriate labels to their respective targets. succinyl-CoA succinate acetyl-CoA CoA-SH acetoacetyl-CoA HMG-CoA 2NADP 2NADPH+ 2H acetoacetate K UHL return to a mevalonate + CoA-SH
Amino acids are linked through peptide bonds to form proteins. This linkage of amino acids in the formation of proteins accomplished by [ Select ] reaction V [ Select ] Hydrolysis Fission Condensation Fusion
help with filling in the blanks The amino acid [alanine/aspartate/glutamate] can be transaminated to a- ketoglutarate, the amino acid [alanine/aspartate/glutamate] can be transaminated to pyruvate, and the amino acid [alanine/aspartate/glutamate] can be transaminated to oxaloacetate. As a result, all three amino acids are considered [glucogenic/ketogenic/metagenic]. The carbon of urea comes directly from [carbon dioxide/a-carbon of an amino acid/glucose]. The nitrogen atoms in urea come from [ammonia/DNA/pyruvate] and [aspartate/glutamate/alanine] directly.
Fill in the gaps (type your answers in all capital letters): Lactate fermentation is an important pathway, allowing the body to regenerate the co-factor in the absence of (molecule). During the process of cellular respiration, the enzyme converts pyruvate to acetyl-coA using five co-factors, including |(name one). Acetyl-CoA is a substrate of the ТСА сycle, where tior one acetyl-CoA one of the TCA cycle produces molecules of and 1 molecule of that function as electron carriers.
Why does it make good metabolic sense for phosphoenolpyruvate carboxykinase, rather than pyruvate carboxylase, to be the primary target for the regulation of gluconeogenesis at the level of control of enzyme synthesis? Match the words in the left column to the appropriate blanks in the sentences on the right. fructose-1,6-bisphosphate pyruvate 3-phosphoglycerate increasing reducing glycolytic pathway forward acetaldehyde lactate phosphoenolpyruvate oxaloacetate citric acid cycle back glyceraldehyde- 3-phosphate Firstly, pyruvate carboxylase converts which can participate in the gluconeogenesis pathway, and also plays an additional metabolic role in aiding the entry of intermediates into the Hence, it makes sense for phosphoenolpyruvate carboxykinase (PEPCK) to catalyze the conversion of gluconeogenesis pathway , thereby pyruvate carboxylase. to to Thirdly, PEPCK action results in the formation of amino acids and their subsequent entry into the citric acid cycle. Reset Help to push the…
Intermediary metabolism includes all the reactions in an organism involved in generating and storing metabolic energy, and with using that energy in the synthesis of low-molecular weight compounds and energy-storing compounds. Which of the following processes is not considered to be intermediary metabolism? degradation of glucose to two molecules of pyruvate synthesis of a 16-carbon fatty acid from 8 acetyl-CoA molecules synthesis of deoxyribonucleotides from ribonucleotides synthesis of mRNA by RNA polymerase II
(d) of glucose oxidation in diabetic human patients treated with Metformin (●) and in (nondiabetic) control human patients (0). At –150 min both groups of subjects were started on an intravenous feed of 3-(®H)-glucose, and at t = 0 min they were started on an oral glucose tolerance test whereby a measured amount of glucose in water (a syrupy mixture) was swallowed followed by measure- ment of blood glucose levels at 30 min intervals. The flux of glucose oxidation was measured by the appear- ance of 3H2O in the blood stream. While the information The diagram to the right compares the rate 8000 ORAL GLUCOSE 6000- 4000- 2000- -120 -60 60 120 180 240 300 Minutes cannot be directly extracted from the reaction mecha- nism diagrams in the textbook, the glycolytic step in which the tritium is first released into water is that catalyzed by TPI, as illustrated at the beginning of Question #3. Explain why this step is suitable for measuring the flux of glycolysis through the release of °H…
Activation of the fatty acid (converting it to fatty acyl-SCoA) requires the expenditure of 2 ATPs. Use your answers from parts B and C to calculate the total number of ATPs generated from the metabolism of a saturated fatty acid with 18 carbon atoms including both the citric acid cycle and the ββbeta-oxidation pathway as well as the initial ATP required to produce the acyl-SCoA molecule that starts the process. Express your answer as an integer.