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- 1. pH cannot affect the enzyme - activity A. True B. False 2. It took 6 mins for the disappearance of blue-black color in test tube 4 with 60 degrees Celsius temperature. A. True B. False1. In zero order reaction, the reaction rate depends only on enzyme concentration. In first order reaction the reaction rate is directly porportional to substyrate concentration a. first statement is false and second statement is true b. both statement is true c. both statement is false d. first statement is true and second statement is false 2. These are catalyst that can be used in the monitoring and diagnosis of disease and their remarkable properties make them sensitive indicators of pathologic changes. a. enzymes b. electrolytes c. substrate d. none of these 3. ALT is stavle in serum at refrigirator or temp for up to 3 weeks, indefinitely if frozen AST has the same stability but markedly decreases with freezing a. both statement are true b. both statement are false c. first statement is true second is false d. second statement is true first statement is false1. The principle behind the test for phosphate is oxidative reaction, conversion of organic form to inorganic phosphate and a precipitation reaction. A. True B. False 2. Sakaguchi test determines amino acids with indole groups present. A. True B. False
- can you help me with this? 1.- calculate the concentrations of all the species present with a 0.10 M EDTA solution (considering all equilibria) 2.- Write down the amounts of reagents that you would use to prepare 760 ml of a carbon-based buffer with a pH of approximately 10.4 and a concentration of 0.125 M1. Define and differentiate the following terms: a. halophilic b. Capnophilic c. Microaerophilic1. Proteus vulgaris is positive for the production of the enzyme phenylalanine whereas Escherichia coli is not. Please describe the chemical reactions of the test that you will use to show this. 2. How will you be able to distinguish between those organisms that are able and those that are not able to hydrolyze starch?
- 1. first coupling enzyme in enzymatic method for bicarbonate analysis a. malate dehydrogenase b. bicarbinate oxidase c. carbonic anhydrase d. pyrivate kinase e. none of the choices 2. color of the flame produced when using in AAS in potassium determination a. orange b. none of the choices c.. yellow d. red e. purple 3. preferred additive for chloride determination .a. EDTA b. sodium heparin c. none of the choices d. sodium citrate c. potassium oxalate1.What is not associated with increased skin cancer a. Arsenic b. Coal tar derivatives c. Sunlight d. Tanning Beds 2.Which of the following is not a problem that a sampling line can introduce a. Interfering compounds b. Loss of contaminant due to reaction c. Condensation of contaminant d. Evaporation of contaminant1. Proteus vulgaris is positive for the production of the enzyme phenylalanine whereas Escherichia coli is not. Please describe the chemical reactions of the test that you will use to show this.
- Enzyme 1 is Aconitase and the starting material goes through both the hydration and dehydration mechanism. I just need help with enzyme 2 and intermediate B, thank you1 the concentration of the enzyme competition inhibitor was 1×10-3M. If 1 µmol of the inhibitor is present inthe 1 mL reaction mixture, Indicate how much the initial degree of hydrolysis decreases as a proportion(in thepresence of inhibitors/in the absence of inhibitors) with respect to the absence of inhibitors.1. Activatotrs are types of A. inhibitor B. cofactor C. enzyme D. substrate 2. Which of the following does NOT affect enzyme selectivity ? A. Electrostatic interactions B. Molecular shape C. hydrophillic Interactions D. None of these answers are correct
