What product is formed in the committed step of the biosynthesis of pyrimidines? O a. pyrophosphate O b.CTP O c. aspartate O d. UTP Oe. N-carbamoylaspartate
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- What is / are the advantages of having a step by step breakdown pathway? Select all the correct answers. Select one or more: a.Creates multiple point of regulation b.controlled capture of released energy c.multiple entry points for breakdown substrates d.generates intermediates that can be used in anabolic metabolismWhich of the following is a degradation product of both cytidine and deoxycytidine? a. β-alanine b. β-aminoisobutyrate c. succinyl-CoA d. uric acidWhich cofactor is essential for the synthesis of arginine in bacteria A. Tetrahydrofolate B. Pyridoxal phosphate C. FADH D. Acetyl-CoA
- What’s the role of biotin in fatty acid synthesis (you may choose more than one answer) A. A nucleophile that directly attack carbon dioxide B. A base that deprotonates acetyl CoA C. A temporary carrier of carbon dioxideGlutamine synthase has how many subunits? A、8 B、10 C、6 D、12Which of the following condenses with oxaloacetate to form citrate? A) carboxybiotin B) cis-aconitate C) acetyl-CoA D) oxalosuccinate E) succinyl-phosphate
- What are riboflavin and niacin? Explain how these molecules are important to cellular metabolism.The key regulatory enzyme in pyrimidine synthesis is: a. Aspartate transcarbamoylase. b. Glutamine phosphoribosyl amidotransferase. c. Uridine monophosphate synthetase. d. Orotidylate decarboxylaseHow Do Vitamin-Derived Coenzymes Aid Metabolism? What chemical functionality is provided to enzyme reactions by pyridoxal phosphate (we Chapter 13)? By coenzyme A (see Chapter I9)? By vitamin B12 (see Chapter 23)? By thiamine pyrophosphate (see Chapter 19)?
- What specific reaction cannot occur due to the presence of cyanide? A.Transfer of electrons to co-enzymes B.Inability to strip a carbon from pyruvate C.Transfer of electrons to and between carrier proteins D.Addition of a phosphate onto ADP to make ATPProvide an illustration showing the broken down of C7 fatty acid into its corresponding end products. What are the products being generated and how much of these products are generated from C7 fatty acids? Briefly explain it.The key regulatory enzyme is purine synthesis is: a. Glycinamide ribonucleotide synthetase. b. Adenylosuccinate lyase. c. Glutamine phosphoribosyl amidotransferase. d. Carbamoyl phosphate synthetase.