Practice Question Chapter 3During the maturing process ofcertain cheeses, molds are added tothe cheese to participate in theflavouring, protecting, and maturingof the cheese. If you like bluecheese, like Stilton cheese,eating Penicillium, the mold addedto the cheese which gives it itsdistinct marbled colouring. Photofrom Wikipedia.youlike2. How could a mold like Penicillium be protective against certain contaminants butnot others? You shouldn't have to search the internet for an answer.

Cheese, a diary product consists of a complex microbial environment housing a multitude of microbial…

Answered: During the maturing process of certain…

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,...

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Topic: Multiple Tube Fermentation Questions: 1. What protocol should you follow if gas formation is less than 10%? a. Why not test for pathogens directly instead of usimg indicator organism such as coliform bacteria? b. Can you use the MPN method to test for the presence of coliforms in food? Why or why not? c. Describe another method of determining the presence of coliforms in a water sample.
QUESTION: Microbes from a blood culture inoculated with blood drawn from a catheter were determined by the appearance of growth on Mannitol Salts Agar and through other tests to be Staphylococcus epidermidis. It can be concluded that: a. a bloodstream infection caused by S. epidermidis is occurring in the patient from whom the blood was drawn b. The bacteria fermented mannitol, changing the color of the growth medium from pink to yellow. c S. epidermidis is present in the sample as a normal flora contaminant d. That in order to determine if a bloodstream infection is present, these results must be compared to a blood culture of a sample drawn from a peripheral vein
Question:- How to perform a bactericidal test bactericidal test of Dental Pulp Stem Cell (DPSC)?
Question: Recommended tool for a plant protein (Scansite, NetPhos, GPS) Why?
Question:- Rust fungi (biotrophs) and leaf spot fungi (necrotrophs) can both cause foliar infections. You are running a controlled experiment with bean plants; in one treatment you inoculate with rust and in another you inoculate with leaf spot pathogens. Your treatments result in identical disease incidence (50%) in both treatments. After 6 weeks further growth, which treatment do you predict will result in the greatest reduction in plant growth compared to the control? Compare and contrast the physiology of these two diseases to support your prediction.
Unpacking Problem 411. What type of organism is E. coli?2. What does a culture of E. coli look like?3. On what sort of substrates does E. coli generally grow inits natural habitat?4. What are the minimal requirements for E. coli cells todivide?5. Define the terms prototroph and auxotroph.6. Which cultures in this experiment are prototrophic,and which are auxotrophic?7. Given some strains of unknown genotype regardingthiamine and proline, how would you test their genotypes? Give precise experimental details, includingequipment.8. What kinds of chemicals are proline and thiamine?Does it matter in this experiment?9. Draw a diagram showing the full set of manipulationsperformed in the experiment.10. Why do you think the experiment was done?11. How was it established that pro enters after thi? Giveprecise experimental steps.12. In what way does an interrupted-mating experimentdiffer from the experiment described in this problem?13. What is an exconjugant? How do you think that exconjugants…
Problem 1: At a total magnification of 100x, a student measures 16.4 ocular micrometer divisions per millimeter. What is the distance, in micrometers, per ocular unit at 100x? Problem 2: At a total magnification of 400x, a student measures 4.1 ocular micrometer divisions per millimeter. What is the distance, in micrometers, per ocular unit at 400x? Problem 3: Notice the pattern in the above 2 problems. What do you think the distance in micrometers per ocular unit at 1000x would be?
General Electrophoresis Questions: 1. What makes macromolecules move through the gel in electrophoresis?2. What determines the speed at which macromolecules move through the gel in electrophoresis? In a single gel, why do some move faster than others?3. Why do we use different procedures for DNA and protein electrophoresis?
Procedure 6: Respiration (Aerobic) 1. Obtain a small test tube of phenol red and carefully place six peas into the test tube with the dye. 2. Let the peas respire for 10-15 minutes. QUESTION 1. What color does the phenol red change to? Why?
Need help with the following questions for microbiology 1. Which of the following total magnification (on a compound light microscope) must be used to identify bacterial morphology A. 100 x B. 400 x C. 300 x D. 1000 x 2. You learned about the Bio Safety Level (BSL) categories in Microbiology Lab, which of the following BSL category is safe to processed in a lab on open counter top? A. BSL3 B. BSL2 C. BSL1 D. BSL4 E. BSL1 and BSL2 3. Streak Plate method is used for A. all choices are correct B. used to isolate bacteria from a mixed culture/sample C. is used routinely in Microbiological labs D. is essential tool for isolation and identification of any specific bacteria 4. A selective laboratory growth medium for Gram negative bacteria will allow -------. A. only algae to grow B. only viruses to grow C. only G+ to grow D. only G- to grow 5. You learned that microbes are ubiquitous and they are part of normal flora of various body sites, however which body sites is/are supposed to be…
Sieve elements (both sieve cells and sieve tube members) lose their nuclei during development, but they must remain alive. What is the name of the cell associated with sieve cells? The one associated with sieve tube members?
Guide Questions: Define and contrast the terms “sterile” and “clean”. List 5 other methods of sterilization and describe the principle/s and when each method is used?

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