A. Osmotic Pressure - Results (see link "Effect of Osmotic Pressure on Microbial Growth") Using information from the link complete the table below by evaluating the extent of growth of each microbe using a scale from zero (no growth) to 5 (high level of growth). Place the number values into the table. (Megan) Plate S. cerevisiae S. aureus E. coli H. salinarium 0.5% NaCl 1 5. 0. 20% NaCl 1 25 % NaCl 1 0.5% sucrose 5. 25 % sucrose 4 3. 50 % sucrose 4 3 1. What conclusions do you draw from these results? (Megan)

A. Osmotic Pressure - Results (see link "Effect of Osmotic Pressure on Microbial Growth") Using information from the link complete the table below by evaluating the extent of growth of each microbe using a scale from zero (no growth) to 5 (high level of growth). Place the number values into the table. (Megan) Plate S. cerevisiae S. aureus E. coli H. salinarium 0.5% NaCl 1 5. 0. 20% NaCl 1 25 % NaCl 1 0.5% sucrose 5. 25 % sucrose 4 3. 50 % sucrose 4 3 1. What conclusions do you draw from these results? (Megan)

Principles Of Pharmacology Med Assist

6th Edition

ISBN:9781337512442

Author:RICE

Publisher:RICE

Chapter15: Antibiotic Agents

Section: Chapter Questions

Problem 19RQ

See similar textbooks

Similar questions

Complete the table below with the observations: include amount of growth (-, +, ++, +, ++), colonial morphology for NA, color of colonies for EMB, and media color for MSA. Organism/ Media Nutrient Agar (NA) Eosin Methylene Blue (EMB) Agar Mannitol Salt Agar (MSA) Escherichia coli Pseudomonas aeruginosa Staphylococcus epidermidis Staphylococcus aureus Unknown 9 mixture
What results on a microdilution antimicrobial susceptibility test would indicate an antibiotic would be an effective treatment for an infection? O a. Growth next to the antibiotic O b. High optical density in the well with inoculum and antibiotic O c. Low optical density in the well with inoculum and antibiotic O d. No growth next to the antibiotic disk Clear my choice Next page
A. Bacterial Growth Curve Categorization. Drag and drop the microbial culture plates on the column that best represents the bacterial colony growth phase. -Number of Bacterial Cells (Log) ➡➡➡ Lag Exponential Phase Phase Stationary Phase Time (h) 24 Death Phase 48
LAB SECTION I WAS PRESENT AND PERFORMED THIS EXERCISE (INITIALS) The Lethal Effect of Ultraviolet Radiation on Microbial Growth OBSERVATIONS AND INTERPRETATIONS Enter your class data below. Score the relative amount of growth on each plate. Use the numbers 0, 1, 2, or 3 (0 is no growth; 3 is abundant growth). Organism B. subtilis 5 seconds Imin 5+ 1 3 minutes 10 minutes 10 seconds 5+ 3min 30 seconds 5min 4+ minute 10min S. aureus 5 + 3 + 4 니- + 2 1 Micrococcus 1 10 sec 4 M 31m 10min 3'ın Questions of this exercise is to demonstrate the comparative effect of UV on two bacterial populations. The purpose This could have been accomplished without the cardboard cover. Why was the cover used? control site 1 Expe SECTION TWO MICROBIAL GROWTH DATA SHEET 2-1
Answer the following questions: 1. Define a bacterial colony. 2. What is the difference between macroscopic and microscopic appearance of bacteria? 3. State the three standard terms used to describe single colonies on agar plates. 4. State and define the three types of growth that may be seen in a broth culture. 5. State three basic shapes of bacteria. 6. State and describe the different arrangements of cocci. 7. What is the difference between true motility and Brownian motion?
Examine the given table below. What conclusions can be drawn from the data regarding the effects of varying pH in bacterial activity? Explain and Justify your points. Table 1. Effect of different pH on Antibacterial Growth Diameter of Inhibition zone (mm) of different pH 7 6 8 9 21 15 12 34 21 15 41 33 21 22 20 0 Test organisms Escheichia coli S. typhi Bacillus subtilis 5.8 33 30 44 42 54 50 30 Staphylococcus 33 aureus
Examine the given table below. What conclusions can be drawn from the data regarding the effects of varying pH in bacterial activity? Explain and justify your points Table 1. Effect of different pH on Antibacterial Growth Diameter of Inhibition zone (mm) of different pH 6 Test organisms 5.8 33 44 54 Staphylococcus 33 aureus Escheichia coli S. typhi Bacillus subtilis 7 8 30 21 15 42 34 21 50 41 33 30 22 20 9 12 15 21 0
Choose one specific way from each of the two methods of inhibiting the growth of microbes below. Describe the method, explain the mechanism of action of killing the microorganisms and give practical applications of your chosen ways. 1. Physical Methods - Heat, cold, dessication, radiation, ultrasonic waves, filtration, gaseous atmosphere 2. Chemical Methods- disinfectants, antiseptics
Describe characteristics of Streptococcus Agalactiae in the Agar: (How does colonies look like (color) and explain does it grow on that agar. (Don't have to write the incubation period) ~ Only describe how would it look like on the Agar: Blood Agar (Aerobic) MacConkey EMB PEA Mannitol Salt Agar Chocolate Agar Nutrient Agar
A Photo credit: BSP3D- Group 5 Pharm. Bio. Sci 3 Laboratory (S.Y. 2016-2017) Sample is Bacillus subtilis; A-Ciprofloxacin; B-Ampicillin; C-Tetracycline; D- Vancomycin Refer to the image above and answer the following questions: 1. By just looking at the example above, which do you think is the most effective antibiotic for Bacillus subtilis? which is the least effective? and why? 2. How will you measure the zone of inhibition of vancomycin (letter D)? 3. What is the importance of evenly distributing the microbe onto the plate? 3. Subtilis
If lysozyme is added to a microbial culture. Predict what will be observed if the culture is affected by the action of lysozyme. A change in color will be visible in the tube. An increase in absorbance will be observed over time. A decrease in absorbance will be observed over time. An increase in turbidity will be observed over time.
Answer the following questions briefly and concisely 1.How do bacteria in a chemostat and those in a batch culture vary from one another? 2. What happens in a chemostat if the dilution rate is higher than the organism's maximum specific growth rate? 3.Does a chemostat require the use of pure cultures? 4. Why would a complicated culture media for Leuconostoc mesenteroides be simpler to make than one with a fixed chemical composition?