Both the salvage and de novo synthesis pathways of purine and pyrimidine biosynthesis lead to the production of nucleoside-5'-phosphates through the utilization of an activated sugar. The activated sugar intermediate used for this purpose is: a) Glucose 6 (P) b) Ribose 5 (P) c) 5 Phosphoribosyl 1 pyrophosphate d) Ribosyl pyrophosphate

Q: Bacterial species that are capable of synthesising the amino acid histidine do not need it in their…

A: Introduction Histidine is synthesized from phosphoribosyl pyrophosphate (PRPP), which is made from…

Q: A species of bacteria can synthesize the amino acid histidine, so they do not require histidine in…

A: Feedback inhibition is a mechanism to control cellular activity. The activity of the enzyme is…

Q: 9. Which of the following two enzymes is secreted from E. coli cells into the surrounding…

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Q: As described in 4C above, PLP-dependent enzymes can generate formaldehyde from serine. This compound…

A: Protonation/deprotonation is a common step in biochemical reaction. Enzymatic reactions can proceed…

Q: D) What are the different substrate specificities of elastase, trypsin, and chymotrypsin? And, why,…

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Q: What is the difference between non-competitive or allosteric modes of inhibition for the compounds…

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Q: Congenital sucrase-isomaltase deficiency (CSID) is a genetic condition that prevents the metabolism…

A:

Q: Predict the locations of 14C in Aspartate synthesis using the following labeled 14C succinate.

A: Given, Structure of radio label succinate: -OO14C-CH2-14CH2-14COO- Succinate is an intermediate of…

Q: 7. Chymotrypsin is subject to regulation by proteolytic cleavage. A) Explain how chymotrypsin is…

A: Chymotrypsin is the enzyme which has the function of breaking down proteins and facilitating its…

Q: a) Based on the mechanism shown in Figure 2A, what type of enzyme is transpeptidase? : Lyase…

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Q: Which of the following amino acid types is mostly likely to be hydroxylated in a posttranslation…

A: Hydroxylation is defined as a process of oxidation reaction where the carbon-hydrogen bond in the…

Q: (PE40) NAD*-ADP*-Biotin + EEF2 What role does each molecule serve in the ADP-ribosyltransferase…

A: The addition of ADP-ribose post-translationally to a protein is called ADP-ribosylation. It is…

Q: Which of the following regulatory mechanisms will specifically inhibit pyrimidine synthesis (and not…

A: De novo pathway and salvage pathways are two pathways used for nucleotide biosynthesis. In the…

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Q: In serine protease mechanism, which specie(s) act(s) as a nucleophile? A.) serine B.) histidine C.)…

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Q: In the "biochemical assay of b-galactosidase activity", what is o-nitrophenyl-b-D-galactosidase…

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Q: Which of the following anticodons could be charged with Asparagine (Asn)? Question 23 options:…

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Q: Which of the following would result in the greatest decrease in function of the catalytic triad…

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Q: The enzyme prenyl transferase is responsible for condensing isopentenyl pyrophosphate units during…

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Q: In the salvage of purines, hypoxanthine-guanine phosphoribosyltransferase (HGPRT) is responsible for…

A: Purines are heterocyclic rings made up of a five-membered ring fused to a six-membered ring.…

Q: n PLP dependent enzymes, what amino acid is initially bound to PLP in the PLP-Schiff base state? a)…

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Q: enzyme A enzyme B enzyme C compound 1 compound 2 compound 3 compound 4 Consider the biochemical…

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Q: comparing the synthesis of pyrimidines vs. purines

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Q: Tissues that are unable to produce nucleotides de novo depend on ____________________ to maintain an…

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Metabolic pathways

Metabolism is defined as the group of life-supporting, enzyme-mediated chemical reactions in organisms. A metabolic pathway is a set of these chemical reactions that involve anabolism (synthesis of complex biomolecules) and catabolism (breakdown of biomolecules into small molecules) that occur inside a cell. Metabolites are the reacting substances, products, and intermediate substances of an enzymatic process that are altered by a series of chemical events catalyzed by enzymes.