MIC 103L-A Exam 1 Spring 2018.pdf - MIC 103L-A Exam 1(30...

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Physics for Scientists and Engineers
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Chapter 19 / Exercise 28
Physics for Scientists and Engineers
Jewett/Serway
Expert Verified
MIC 103L-A Exam 1 Page 1MIC 103L-A Exam 1(30 April 2018) • Please put your Nameand Student ID Numberon your ScanTron. • Please fill-in Form A. • Please mark your Answers to Multiple Choice Questions on your ScanTron. • Please erase any Mistakes on your ScanTron very Carefully. èxPlease do not ask any Questions during the Exam. ___________________________________________________________________ 1. Your Clan made a Dilution Series using our Emerald Green Food Dye Stock in Lab 1: • You added 4.5 ml Water to each of four (4) Test Tubes, which were labelled "1", "2", "3" and "4". • You transferred 500 μl of our Emerald Green Food Dye Stock to the "1" Tube. You vortexed this "1" Tube. • You used a new Pipette Tip to transfer 500 μl from this "1" Tube to the "2" Tube. You vortexed this "2" Tube. • You used a new Pipette Tip to transfer 500 μl from this "2" Tube to the "3" Tube. You vortexed this "3" Tube. • You used a new Pipette Tip to transfer 500μl of this "3" Tube to the "4" Tube. You vortexed this "4" Tube. Assume there were 7.37 x 1010Chromatophoresin each Milliliter of our Emerald Green Food Dye Stock. What is the Total Number of Chromatophores (G= color holders)in the entire Contents of your Clan's "4" Dilution Tube? A. 2.58 x 1010Chromatophores _________________________________________ B. 2.95 x 109Chromatophores _________________________________________ C. 3.32 x 108Chromatophores _________________________________________ D. 3.69 x 107Chromatophores
We have textbook solutions for you!
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Physics for Scientists and Engineers
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Chapter 19 / Exercise 28
Physics for Scientists and Engineers
Jewett/Serway
Expert Verified
Page 22. A Researcher obtains a Soil Sample from a Garden. She uses a “Pinch” of this Soil to inoculate ~5.0 ml of Sodium Benzoate that has been added to each of five Test Tubes. She incubates these five inoculated Tubes for a Week at 25°C. Following Incubation all five Test Tubes appear Turbid. Our Researcher streaks a Loopful of turbid Sodium Benzoate from one of these five Tubes onto each of five Sodium Benzoate Plates. She incubates these five Sodium Benzoate Plates at 30°C for 48 Hours. After Incubation, Colonies of Bacteria appear on all of these Plates. Which of the Following represents the expected Appearance of the Colonies on these Plates and the expected Morphology and Gram Stain Results of the Bacteria taken from these Colonies?
3. Our Researcher uses this same Soil Sample to add a “Pinch” of Soil into a Centrifuge Tube containing ~5.0 ml of Water. She places this inoculated Tube in an 80°C Water Bath for 20 Minutes. After 20 Minutes she removes this Tube, allows it to cool, and vortexes it. She then uses a Sterile Loop to streak a Sample from this Tube onto five Nutrient Agar Plates. After Incubation at 30°C for 48 Hours, Colonies of Bacteria appear on all of these Plates. Which of the Following represents the Expected Results for Colony Morphology and Gram Stain Bacteria taken from these Colonies?
MIC 103L-A Exam 1 Page 34.

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