tube 2 Correct answer: d. tube 4 What is the usual substrate for the pancreatic enzyme peptidase? Your answer : a. starch Correct answer: d. peptides Experiment Data: Tube No. 1 2 3 4 5 6 Reagent 1 Amylase Amylase Amylase Cellulose Peptidase Bacteria Reagent 2 Starch Glucose Cellulose Water Starch Cellulose Reagent 3 pH 7.0 pH 7.0 pH 7.0 pH 7.0 pH 7.0 pH 7.0 Time 60 60 60 60 60 60 Temp. 37 37 37 37 37 37 IKI + + + Benedict’s ++ ++ ++ 07/17/12 page 2 Post-lab Quiz Results You scored 25% by
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and the container (Thinkwell‚ 2012). (c) (2 pts) What is the difference between weigh boats and weigh paper‚ and in what circumstances should you use each? Be specific and detailed in your answer. Answer: The weigh boats are containers used to stop reagents from contacting the balance area. Weigh boats which are called filter paper can be utilized as transporting vessel of the chemical to be measured. Filter papers are classified as low-cost version of the weigh boats. The material makeup of weigh boats
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Lady Jewellyn G.Diola*‚ Jennika Joy L. Casin‚ Andrian R. De Leon‚ Jan Rotsen Kyle A. Delos Santos Department of Chemistry‚ College of Science *Lady Jewellyn G. Diola; ladyjewellyndiola@yahoo.com Abstract Synthesis of 3‚4-dihydro-3-(p-methylphenyl)-1‚2-(2h)-benzoxazine involves the nucleophillic addition of the 1 °amine group upon the carbonyly group of the salicylaldehyde‚ the reduction of imine to amine and the addition of paraformaldehyde to proceed ring closure. The
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References: Reagent table http://www.chemblink.com/products/133-08-4.htm
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with aqueous sodium bicarbonate. The ester is purified by distillation 4.APPARATUS AND REAGENTS: 1. Isopenthyl alcohol(also called isoamyl alcohol or 3-methyl-1- buthanol) 2. Glacial acetic acid 3. Concentrated sulphuric acid 4. Round bottom flask 5. Reflux apparatus 6. Heating mantle 7. Cold water 8. Conical flask 9. Aqueous sodium bicarbonate 10. Red litmus paper 4.APPARATUS AND REAGENTS: 11. Saturated aqueous sodium chloride 12. Anhydrous
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figure out who was guilty by determining which macromolecules are present in the mystery food sample. Question Which macromolecules are present in the mystery food sample? Hypothesis If the mystery food is tofu‚ then it will react with the reagent that indicates the presence of a protein because tofu is primarily protein. Variables Independent variable: presence of macromolecules‚ including monosaccharides‚ polysaccharides‚ proteins‚ and lipids Dependent variable: color changes observed
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Previously‚ Yeoh‚ & Wong (1993) reported the nutritional values of A. gangetica. Ogle et al.‚ 2001 reported the folate composition of A. gangetica. However‚ not much information on the utility of this leafy vegetable has been reported. To the best of our knowledge‚ there is no report on the optimization of polyphenols and their radical scavenging activities from the edible leaves of A. gangetica. Therefore‚ the main aim of this study is to optimize extraction conditions such as EtOH concentration
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Ch. 1 Fundamentals of Chemistry Subchapter – Stoichiometry and Units 1. An element X forms an oxide with the formula X4O10. If 31 g of X combines with 40 g of oxygen‚ what is the identity of X? A. N B. P C. C D. S Correct Answer: B: P Explanation: We can solve for the atomic mass of X to identify it. The amount in g of X for any amount in g of O is given by: Rearranging the above equation and substituting the given mass of X and O‚ we get: Thus‚ the atomic mass of X
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Background: Lipid and protein composition varies in tissue types. Results: When comparing liver‚ muscle‚ and adipose tissue‚ adipose tissue had the highest percent lipid and liver tissue had the highest percent protein. Conclusion: Based on analysis of the gels‚ the liver appeared to have the most variety in proteins when comparing liver‚ muscle‚ and adipose tissue. Significance: In order to determine the composition of a tissue‚ specific macromolecules can be extracted‚ quantified‚ and analyzed
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Autumn White Biology 258-05 November 26‚ 2012 Unknown #19 Enterbacteriaceae Enterobacter aerogenes ABSTRACT The objective of this report was to identify an unknown microorganism through several differential media tests. Over the course of a couple weeks‚ ten tests were performed. First‚ a gram stain was performed‚ indicating the bacterium was gram negative. An aerotolerance test determined that the bacterium was a facultative anaerobe. Next‚ a negative result in the
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