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- QUESTION 9 In a broth dilution test, the first clear tube in the dilution series indicates: O a. thermal death time b. best antibiotic for the situation OG MIC d. zone of inhibition QUESTION 10 Who is credited for first finding a naturally occurring antimicrobial agent? O a. Joseph Lister Ob. Edward Jenner OC. Alexander Fleming Od. Paul EhrlichQuestion 2. After sterility test of an injectable it was observed that an injection is failed the test what will you do then depending on the product nature (heat sensitive/ heat resistant) (Not more than one sentence)? Mention the purpose of product inhibition test and how it is performed (Not more than one sentence) ? How will you check the validity of a medium (Not more than one sentence) ?Question 1 Which application are micropipettors NOT commonly used for? O 1. Mixing/resuspending cells or reagents into solution. 2. Transferring microliter (µL) volumes of liquid between receptacles. O 3. Measuring milliliter (mL) volumes of liquid. O 4. Loading samples for analytical techniques.
- question 2Question 5 Match the media to its functional classification TS broth or TSA [ Choose ] [ Choose ] Blood Agar Enrichment and differential medium Selective Sabouraud Dextrose Agar All purpose medium Selective and Differential MSA [ Choose ]Question 9 0.5 pts Which culture medium is used to determine whether or not a microorganism possesses flagella, cilia, or pseudopodia? Broth O Not Listed Deep Plate O Slant
- Question 12 (1 point) Listen You are working in the lab with Streptococcus pyogenes and two other bacteria. You streak all three of these microbes onto a Blood Agar plate and observe the following: All of the bacteria grow on the plate but there is a large zone of clearing around S. pyogenes, and no zone of clearing on the other two bacteria. Based on these results what type of Medium is Blood Agar? O A) Blood agar is a culture medium. B) Blood Agar is a selective medium. C) Blood agar is a differential medium. O D) Blood agar is an exclusion medium. O E) Blood agar is a counting medium. 98% 99+Question 2 MSA is a selective medium and contains a higher salt concentration, a pH indicator and Mannitol sugar. Which of the following makes it selective me Staphylococci? OA Mannitol O B. PH indicator OC Agar O D, SaltQuestion 4 a) Explain the importance of reducing exposure dose and time to a patient undergoing a diagnostic X-ray examination. Describe ways to achieve this. b) Calculate the wavelength of the most energetic X-rays produced by tube operating at pd of [1.4]
- QUESTION 2 The cell density of a liquid sample is determined using the standard plate count method with the serial dilution scheme that is shown. What is the original cell density (OCD) of the liquid sample in CFU/mL? 0.1 mL 0.1 ml 1.0 ml 0.1 mL 1 2 102 9.9 mL 9.9 mL 9.0 mL CFUS O A. 1.02 x 107 O B. 102 OC. 1.02 x 108 OD. 1.02 x 106 O E. 1.02 x 103Question 15 Which of the following medium:function classification is INCORRECT? Sabouraud Dextrose: selective and differential Blood agar: differential and enrichment O MacConkey: selective and differential O MSA: selective and differentialQuestion 5: The following experiment was done to separate plant pigments from spinach leaves. 4 3 Watch glass containing concentrated extract a. Fill in the information in the table below: Pigment 2 No. 1 Lost the sample Name Solvent Front Det up the chromatography chamber Allow the solvent to move up Color Olive Green Blue Green Yellow Yellow-Orange Sample apot Distance travelled (cm) 3 5.6 8.4 13.5 15 What is the name of this technique for separation of the pigments? Solvent From Pigment 4 0.2 Pigment 3 Pigment 2 Ratio factor (Rf) b. Write the equation and show the calculations to find out the Rf for pigment 3. Pigmen 1 0.37 0.9 n that the solvent used was non-polar, which of the pigments is the most polar?