1. Is the reagent used to cut peptide bonds during amino acid analysis. 2. Is the name of the amino acid present in the active site of carbonic anhydrase. Is the name of the reagent used to poison serine proteases. 4. Is a component of bacterial cell wall other than N-acetylglucosamine? 5. Is the optimal pH of lysozyme. 3.
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- Choose the False statement regarding mechanism of protease? 1. Cysteine proteases perform covalent catalysis, using third group of cysteine as a nucleophile. 2. Serine, threonine, and cysteine proteases all perform covalent catalysis. 3. Metalloproteases and aspartate proteases perform noncovalent catalysis. 4. HIV-1 protease is an aspartate protease and a target of anti-HIV therapies. 5. In metalloproteases, a metal ion cofactor changes the state of oxidation.Which ONE of the following best describes amoxicillin? Select one: A. A natural product produced by Streptomyces spp. B. Suitable for use alone against beta-lactamase-producing bacteria C. Inhibits the transglycosylation step in peptidoglycan synthesis D. The presence of an amino group facilitates entry through water-filled porins within the outer membrane of E. coli E. Is classified as a carbapenemA. AG for the two reactions is different B. Trypsin is a protein, and elastase is not D. One of the reactions is endergonic, and the other is exergonic Hydrolysis of lysine bonds requires water; hydrolysis of alanine bonds des Part I: Microbiology 7. Which structures play direct roles in permitting bacteria to adhere to each other or to other surfaces? A. Cell wall and capsules B Capsule and fimbriae C. Cell membrane and endospores D. None 8. If E. coli lacks an F factor (F plasmid), and if bacteriophages are excluded from the bacterial cultures, then by which of these means Jilug some genes might be transmitted to other E. coli cells? A. via sex pili via transduction C. via conjugation D. via transformation both B and C 9. Broad-spectrum antibiotics inhibit the growth of most intestinal bacteria. A hospital patient who is Jas receiving broad-spectrum antibiotics is most likely to become A. unable to fix carbon dioxide B. unable to fix nitrogen deficient in certain vitamin K D. unable…
- 19. Identify a FALSE statement from the following, Group of answer choices Clotrimazole inhibits cholesterol synthesis in fungal membrane Clotrimazole is used for treatment of superficial yeast infection Gresiofulvin is ideally used for nail and skin fungal treatment Polyenes forms pores in fungal membrane by disrupting ergosterol Gresiofulvin inhibits microtubules polymerization and depolymerization 20. Media used to isolate N. gonorrhea from clinical samples ................... Group of answer choices Anaerobic Growth Media Thayer Martin Media Sabouraud’s Media Blood Agar Media Differential MediaExplain how bacteria can become resistant to ampicillin. Be sure to mention the following terms: peptidoglycan, beta lactamase, transpeptidase, beta lactam.4. Bacterium Q had the lab results below. What can you tell me about the protein metabolism of this bacterium? Which protein and amino acids can it catabolize, among gelatin, urea, phenylalanine, sulfur-containing amino acids and tryptophan? ________________________________________________ Can it desulfur proteins? _______________________________________ Can it produce NH3 from the amino acid phenylalanine?
- 1. What results are expected if you drop H2O2 into a cut on your arm? Explain why those results are expected. 2. To do this test, why do you have to grow the organism in medium containing tryptophan? 3. Why is a red color after the addition of zinc a negative result for nitrate reductase?I mutated carboxylic anhydrase enzyme active site residue. For example, Histidine 64 and valine 121. How would you test the function of the mutants?Consider the following properties of the protein components of a sample mixture as provided in the table below. Protein Molecular IpH Percentage of polar amino acid residues Weight (kDa) (%) АСЕ 200 7 20 CLU 25 65 DIA 100 10 40 НЕА 50 80
- Match each antibacterial drug with its primary target. Chloramphenico✓ Choose... Nucleic acid synthesis Fluoroquinolone Cell membrane Cell wall Tetracycline Metabolic pathway Translation Rifampin Aminoglycosides Choose... Macrolide Choose... Penicillin Choose... Sulfonamides Choose... Cephalosporin Choose... Vancomycin Choose... Polymyxin Choose... → ( 4 ( ( ( (. A certain medium has the following composition: Glucose 15 g Yeast extract 5 g Peptone 5 g KH2PO4 2 g Distilled water 1,000 ml Tell what chemical category this medium belongs to, and explain why this is true. How could you convert Staphylococcus medium (table 3.6A) into a nonsynthetic medium? a. Name four categories that blood agar fits. Alpha hemolysis Beta hemolysis Gamma Alpha prime Name four differential reactions that TSIA shows. Observe figure 3.15. Suggest what causes the difference in growth pattern between nonmotile and motile bacteria. Explain what a medium that is both selective and differential does, using figure 3.18. a. What kind of medium might you make to selectively grow a bacterium that lives in the ocean? MSA Mannitol salt agar One that lives in the human stomach? Why are intestinal bacteria able to grow…It is known that 80% of Penicillin is protein bound. Explain how most of it is being cleared from the blood.