The quality of essential oils has been tested using different methods including: (Select all that apply) Choose at least one answer. a. Gas Chromatography (GC) b. Gas Spectrometry (GS), c. Chiral Chemical Analysis (CCA) d. Mass Spectrometry (MS)
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- Discuss the underlying premise of each test that will be performed in this experiment. a. Biuret Test b. Xanthoproteic Test c. Milson’s Test d. Hopkin’s Cole Test e. Reduced Sulfur TestIdentify the FALSE statement about visualization of thin layer chromatography results. A. The spots of colourless compounds are invisible to the eyes. B. These spots can be detęcted by putting the plate under ultraviolet light. C. These spots can be detected by placing the plate in a covered jar containing iodine crystals. D. None of the above. All are true statements.Which of the following tests gives bluish green product due to the presence of carbohydrates?* A. Molisch B. Anthrone C. Benedict D. Seliwanoff E. None of the given options
- What test are you going to use in the lab to determine the presence of eggs in a cake: a. Fehling's b. Benedict. c. Bial's d. Sudan III e. Biuret Bials test is used for detecting. ................... in a solution. a. Collagen b. Carbohydrates c. Fatty acids d. DNA e. Ribose When does crossing over occur during melosis? a. Metaphasell b. Telophase c. Prophase 11 d. Anaphase! e. Prophase!Give at least two (2) chemical tests for amino acids/ proteins other than what were performed in this experiment. For each test, cite the respective application and describe the positive result. a.Ninhydrin Test b.Biuret’s Test c.Xanthoproteic Test d.Millon’s Test e.Sakaguchi test f.Hopkins –Cole Test g.Sulfur Reaction or Lead Acetate TestGive at least two (2) chemical tests for amino acids/ proteins other than what were performed in this experiment. For each test, cite the respective application and describe the positive result. test that have been performed a.Ninhydrin Test b.Biuret’s Test c.Xanthoproteic Test d.Millon’s Test e.Sakaguchi test f.Hopkins –Cole Test g.Sulfur Reaction or Lead Acetate Test
- Choose the combination of answers that most accurately completes the statement.The most versatile method of sterilizing heat-sensitive liquids is a. UV radiation c. beta propiolactone b. exposure to ozone d. fi ltrationChoose the combination of answers that most accurately completes the statement. The most versatile method of sterilizing heat-sensitive liquids is a. UV radiation c. beta propiolactone b. exposure to ozone d. fi ltrationThe acid fast technique is also known as: A. Ziehl-Neelsen stain B. Auramine-rhodamine stain C. Gerrard-Lampard Stain D. Kinyoun method
- Which statement(s) describe(s) a microplate reader?A. It is spectrophotometerB. It can read the absorbance of one sample with adjustable path lengthC. It can handle multiple samples in parallelD. It will do all measurement jobs without our supervision a. A & B b. A, B & C c. A, B, C & D d. A e. A & CBased on the information given, what separation technique(s) is/are most likely feasible? Please explain a. Recrystallization b.Decolorization c.Sublimation d.Distillation e.Extraction f.ChromatographyChoose the one answer that fits best. Which of the following statements regarding the proper procedure for using Micropipettes is NOT correct? O a. You cannot use a 2-20 µl micropipette to pipet 200 µl O b. To expel all the liquid from the tip, you have to press the eject button O c. To draw up solution, press and hold the plunger at the first stop before entering the solution O d. Micropipettes always require the use of a disposable plastic tip O e. While pipetting, micropipettes should always be held as straight as possible