Section A. Table 1 shows the summary results for a sauerkraut experiment of a researcher. Using the data, answer the questions below. Table 1: Summary results for a sauerkraut experiment Day 0 1 2 5 Total aerobic plate Total Gram- count/ml 3.5 X 107 5.6 X 106 4.3 X 107 2.9 X 107 14 3.4 X 10² 35 3.1 X 105 negative count/ml 8.2 X 106 2.4 X 106 3.4 X 104 8.3 X 106 too few to count too few to count Total lactic acid bacteria count/ml 3.4 X 10³ 9.2 X 105 3.4 X 106 4.6 X 107 3.4 X 107 2.6 X 105 Leuconostoc count pH (a) 46 (b) 71 (c) 96 (d) 68 too few to count too few to count 6.7 5.7 5.0 4.4 4.3 4.4

Section A. Table 1 shows the summary results for a sauerkraut experiment of a researcher. Using the data, answer the questions below. Table 1: Summary results for a sauerkraut experiment Day 0 1 2 5 Total aerobic plate Total Gram- count/ml 3.5 X 107 5.6 X 106 4.3 X 107 2.9 X 107 14 3.4 X 10² 35 3.1 X 105 negative count/ml 8.2 X 106 2.4 X 106 3.4 X 104 8.3 X 106 too few to count too few to count Total lactic acid bacteria count/ml 3.4 X 10³ 9.2 X 105 3.4 X 106 4.6 X 107 3.4 X 107 2.6 X 105 Leuconostoc count pH (a) 46 (b) 71 (c) 96 (d) 68 too few to count too few to count 6.7 5.7 5.0 4.4 4.3 4.4

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Which of the following is TRUE about the Nitrate Reduction test? Question 1 options: A Nitrate oxidase is the enzyme present for a positive test result B Pseudomonas aerugenosa can use oxygen instead of NO2 for aerobic respiration C Ammonia is reduced to NO2 by some bacteria D Oxygen is needed to reduce nitrate E It tests the ability to reduce NO3 to NO2 or ammonia or nitrogen
You are testing a potential new antibiotic for its effectiveness at killing Streptococcus pneumoniae, the bacterium that causes pneumonia. As a first test of this drug, you grow the bacteria in the presence of different concentrations of this drug and analyze its effect on the growth of the bacteria. The data are shown in the table below listing the drug concentration in milliMolar (mM) against the percentage of growth relative to the control (no drug). Construct an appropriate graph for the presentation of these data. Drug Concentration (mM) Percentage of Growth (%) 0 100 1 83 2 76 3 62 4 55 5 30 6 15 7 2
Given the scenario, compute for the total volume of the culture media solution (milliliter or liter) and dehydrated media (grams). Scenario: The students of a Microbiology class were tasked to transfer or subculture a pure culture of Escherichia coli bacterium in five 7 mL nutrient broth and five petri dishes of nutrient agar with 20 mL capacity each. Based on the instruction bottles for nutrient broth and nutrient agar, preparation of the culture media is as follows. Nutrient broth: 8 g/liter Nutrient agar: 28 g/liter Formula: C1V1 = C2V2 *Concentration *Volume Computation: What are the answers to the following. Weight in grams of nutrient broth: _________ Distilled water in mL for nutrient broth: __________ Weight in grams of nutrient agar __________ Distilled water in mL for nutrient agar: ____________
The number of bacteria in saliva samples was determined by collecting the saliva, making serial dilutions, and inoculating nutrient agar by the pour plate method. The plates were inoculated aerobically for 48 hours at 37°C. What can you conclude from this data? Why? Mouthwash CFU per ml in salvia Before Use After Use Listerine 2.22 x 107 1.22x107 Schmidts Mouthwash 2.42 x 107 3.22x105 Biotene Mouthwash 3.21 x 107 2.12 x106
Which of the the following results of the extracellular enzyme tests is FALSE? Question 3 options: A Liquid gelatin positive for gelatinase B Clear area around bacterial growth on a starch plate after iodine is added means amylase is present C Clear zone around bacterial growth on a milk plate means caseinase is present D Solid gelatin after is positive for gelatinase E No clear zone around bacterial growth on milk plate means absence of casienase
If the inoculated lactose broth cube exhibits acid production but without gas formation, will you consider this as a negative or positive result? Explain Why is the MPN test qualitative rather than quantitative? Why is the MPN test qualitative rather than quantitative? Why is MPN test qualitative rather than quantitative
Briefly comment on the use of alkaline phosphatase assays as a diagnostic aid for a single named common medical condition.
Experiment #1 From Antoinette de Senna’s Master’s thesis on ‘Screening of biological control organisms for the management of phytopathogenic fungi and foodborne pathogens on produce’. Objective: To screen three LAB (Lactobacillus plantarum, Pediococcus acidilactici, and Pediococcus pentosaceus) for antimicrobial activity against the foodborne pathogens Listeria monocytogenes, Salmonella, and Escherichia coli. Methods: 1 ml of the pathogen was placed into a petri dish. Then, 15-20 ml molten tryptic soy agar (TSA) tempered to 50°C was added. When the TSA solidified, a loopful of LAB was spotted onto the agar. Plates were incubated at 35°C for 24 hours then the zone of inhibition was measured from the boarder of the bacterial colony to the perimeter of the clearing. Results: Questions: What is the independent variable? What is the dependent variable? Suggest a control for this experiment? What is the optimal temperature range for Listeria monocyogenes? Is monocyogenes a…
1 (a)Why is the spectrophotometer set at 0.000 absorbance for the uninoculated tube of broth? (B) Why can't you use the same plot (or standard curve) of plot of absorbance versus cell count for Escherichia coli for other bacteria? (C)List 3 advantages of estimating microbial numbers or biomass by the turbidimetric method? (C)(ii)List 2 disadvantages of this method? (D) Can you measure all kinds of microbes this way? Why not? ( this is not a graded assignment)
Based on the table, what can you conclude from the said data? Title: Indicate whether the microorganism is Resistant, Intermediate or Susceptible with the antibiotic based on the measurement of their zone of inhibition. ANTIBIOTIC MICROORGANISMS Pseudomonas aeruginosa Escherichia coli Staphylococcus aureus Amoxicillin (AMC) Resistant Resistant Resistant Cephalothin (CF) Resistant Susceptible Resistant Chloramphenicol (C) Intermediate Susceptible Resistant Ciprofloxacin (CIP) Susceptible Susceptible Resistant Clindamycin (CC) Resistant Resistant Resistant Erythromycin (E) Resistant Resistant Resistant Oxacillin (OX) Resistant Resistant Resistant Penicillin G (P) Resistant Resistant Resistant Streptomycin (S) Resistant Susceptible Resistant Tetracycline (TE) Resistant Intermediate Resistant Tobramycin (TM) Susceptible…
Please answer all questions they are all part of one question! 1a. Can you determine the source of contamination (for example, human, domestic animal, or wild animal) from the multiple test tube and membrane filter test? b. Design an experiment to detect the presence and number of Acetobacter in wine. Why would you want to perform such a test? c. How could you modify this test to detect enterococci in water?
You have observed the following data from an aerobic plate count. How many bacteria are in the undiluted sample? Dilution Average CFUs/ml 10-8 TNTC (too numerous to count) 10-9 334 10-10 111 10-11 27 10-12 5