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1. What happens to a crushed potato when exposed to distilled water for 5 minutes? Will there be bubbles or not? Explain.
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- PRECIPITATION OF PROTEINS What are peptides? Do all proteins possess peptide bonds? Do all proteins respond to Biuret’s test? What is the difference between coagulation and denaturation? Why is egg white used as an antidote for lead and mercurial poisoning? Explain its mechanism of action. 4.Why is silver nitrate used in the cauterization of wound? Explain your answer.BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. Which of the following statements is TRUE in the catabolism of cytidine triphosphate (CTP)? A. the nitrogen-containing ring will be oxidized B. nitrogen will be released in the form of ammonia (ammonium ion) C. the final product will have the same type of nitrogen-containing ring as CTP D. hypoxanthine will be an intermediate 1. A 7-year-old boy suffers from mental retardation and self-mutilation and has an increased levels of serum uric acid. These symptoms are characteristic of Lesch Nyhan syndrome, which is due to defective ________? A. Xanthine oxidase B. Denovo synthesis of pyrimidines C. HGPRT (Hypoxanthine Guanine Phospho Ribosyl Transferase) D. Salvage pathway for pyrimidine biosynthesisDisadvantages of cholesterol
- topic about : precipitation of proteins by heavy metal salts 3. Will the precipitate formed after treating egg white with strong acid dissolve or not in addition of excess acid? Explain why. ____________________________________________________________________ ____________________________________________________________________Chymotrypsin information about enzyme? Trivial/Common Name Systematic (EC) name and number Chemical reaction catalyzed Metabolic pathway Function and cellular localization Size (kDa) and structure (tertiary and quaternary) pH stability Kinetic properties (Km- and Kcat value/s for natural substrates) Stability and potential inhibitorsBIOMOLECULES - MULTIPLE CHOICE - Please answer properly QUESTION : In human beings, what is the major control of de novo pyrimidine nucleotide synthesis? A. substrate availability B. competitive inhibition of carbamoyl phosphate synthetase II C. feedback inhibition of glutamine-PRPP amidotransferase D. vailability of N-acetyl glutamate
- Lack of triglyceride 1. What are the reasons for increased lipolysis and also how albumin level can be used as an indicator for lipolysis6. Cycle of tricarboxylic acids (TCA):• importance for cellular metabolism;• intracellular localization of TCA enzymes;• sequence of TCA reactions;• TCA enzymes and coenzymes;• substrate phosphorylation reactions in TCA;• decarboxylation reactions in TCA;• enzymes and coenzymes in dihydrogen reactions in TCA;• mechanisms of regulation of TCA.wool consists of alpha keratin, pure wool sweaters exposed to hot water shrink alarmingly, after shrinkage, it is virtually impossible to stretch the seweater back to its original shape, what do you think is the biochemical cause of this phenomenon?
- Need help fast In the structure of Alkaline Phosphatase enzyme what is the distance between the metal ion and the phosphate atom?, the distance between that metal ion and the PO32- group within the active site, what are the 3 amino acids that coordinate the metal ion in the active site of the enzyme?, other metal ion is located close to the zinc atoms.BIOMOLECULES - Please answer the questions properly. - Multiple choice 1. In human beings, what is the major control of de novo pyrimidine nucleotide synthesis? A. substrate availability B. feedback inhibition of glutamine-PRPP amidotransferase C. competitive inhibition of carbamoyl phosphate synthetase II D. availability of N-acetyl glutamate 2. In patients with Lesch Nyhan Syndrome, purine nucleotides are overproduced and over excreted. The hypoxanthine analogue Allopurinol, which effectively treats gout , has no effect on the severe neurological symptoms of Lesch- Nyhan patients because it does not? A. decrease de novo pyrimidine synthesis B. increase PRPP levels (Phosphoribosyl pyrophosphate) C. Decrease urate synthesis D. decrease de novo purine synthesisActivity of pesin in the blood at pH 7.4