Newest microbiology Questions | Wyzant Ask An Expert

A 48-year-old man presents at his health care clinic with complaints of leg weakness. He is a heavy smoker and has had a productive cough for years. Subsequent diagnostic tests reveal he has a... more

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Microbiology Science Biology Chemistry

01/19/21

Pathophysiology/Cancer Question

Explain the mechanisms whereby chemotherapy and irradiation are able to destroy cancer cells, while having less or no effect on normal cells. Any help with this question would be greatly... more

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Answers •2

Microbiology Science Biology Ap Biology

01/13/21

Describe the difference between gene and chromosomal mutations, and how mutations in gametes may result in phenotypic changes in offspring.

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Microbiology Biology Biochemistry

01/12/21

CFU per gram calculation

Hi!I took a sample of 5 grams of ground beef and diluted it to the factor 10^-6 with sterilized water. Afterward I took 1 ml of the the sample and used pour plate method to calculate amount of CFU.... more

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Microbiology

01/08/21

Do you think the competitive assay will provide right/wrong information in these cases?

1. Suppose you are doing the Competitive Assay to study the virulence of two mutants (mutant X and mutant Y) of a bacterial strain. Do you think the competitive assay will provide right/wrong... more

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Microbiology

01/08/21

Which method will be quickest to identify the candidate genes?

Humans have many genes. Some of the genes have an association with infectious diseases. And there are different methods to identify these genes. Suppose you want to identify the... more

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Microbiology

01/08/21

By using the mRNAs, can you identify the genes that were expressed only in vivo? In which method?

You are doing your PhD research in a reputed university, and in your current research project, you are trying to identify the virulent genes of a pathogenic bacterium X. One day your supervisor... more

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Microbiology

01/08/21

What kind of mouse model should I use in these studies?

1. What kind of mouse model will you use in these studies? Briefly explain.a. You want to study the innate immune response against a pathogen.b. You want to study the adaptive immune... more

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Microbiology Math Biology Statistics

12/27/20

How to do data and statistical analysis of data where the type of results and methodology are very different

Hello! I needed help with a systematic review that I am conducting. I have found some data but it is very different and I cannot combine it. I am measuring the complement resistance of certain... more

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Microbiology Biology Biochemistry

12/23/20

Different Agar - MicroBio

Hi!I wonder, when determining the amount of CFU/g in ground meat, why is it more better to use TGE agar (tryptone glucose extract agar) than other types of agar, such as nutrient agar?Thanks!

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Microbiology Biology Biochemistry

12/22/20

Ground Beef Bacteria

Hi!I wonder: can mold and yeast also cause ground beef to go bad? Or is it only bacteria in ground beef that causes the change in color etc after expiration date?

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Microbiology Biology Chemistry Biochemistry

12/15/20

Questions please help

A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more

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Microbiology Biology Chemistry Biochemistry

12/15/20

Breast Cancer Problem

A 45 year-old woman complaining of breast pain was diagnosed with having HER2-positive breast cancer. The patient underwent lumpectomy followed by a period of chemotherapy including adjuvant... more

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Microbiology Math Biology Physics

12/12/20

Serial dilution/dilution factor problem

How would you prepare a 10-2 and 10-4 dilutions if you are provided with 2 saline tubes each containing 4.95ml saline and a tube of undiluted culture.What is the initial concentration of undiluted... more

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Microbiology Biology Chemistry Biochemistry

12/08/20

Choose all correct answers. The plasma membrane...

Choose all correct answers:The plasma membrane...A.Contains Cholesterol moleculesB.Is formed of phospholipids; with polar and non-polar structuresC.Contains DNA moleculesD.Has two identical faces... more

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Microbiology Biology Biochemistry

12/07/20

The specific growth rate (u) is a bettter measure of the cell's growth rate than dX/dt •Why ?

It is about batch fermentation process and bacterial growth curves. u=dx/dt

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Microbiology

12/02/20

A selective media

a) inhibit the growth of certain bacteria while allowing others to grow b) allow for visual distinction of the ability to perform a specific biochemical process c) Will only grow Gram-positive... more

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Microbiology

12/02/20

f a bacterial culture is started with 50 cells, what will be the cell number after four generations? Assuming there was no cell death. (5 Points) a) 100 b) 200 c) 400 d) 800

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Microbiology

12/02/20

The process in which all organisms and pathogens are destroyed is called ------. (5 Points) a) Disinfection b) Sterilization c) Antisepsis d) Pasteurization

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Microbiology

12/02/20

What is a pure culture, and why is it important in microbiology?

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Microbiology

12/02/20

What is the Spread Plate Technique used for? (5 Points) Isolation of bacteria since it will result nicely separated single colonies

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Answers •1

Explain the changes that occur to the characteristics of inspired air before it enters the lungs

List the structures that help to change the characteristic of inspired air before it reaches the lungs.

Describe the negative feedback loop

Name the main body compartments of the human body and list organs in the different compartments

Pathophysiology Cancer Clinical Scenario Question

Pathophysiology/Cancer Question

Describe the difference between gene and chromosomal mutations, and how mutations in gametes may result in phenotypic changes in offspring.

CFU per gram calculation

Do you think the competitive assay will provide right/wrong information in these cases?

Which method will be quickest to identify the candidate genes?

By using the mRNAs, can you identify the genes that were expressed only in vivo? In which method?

What kind of mouse model should I use in these studies?

How to do data and statistical analysis of data where the type of results and methodology are very different

Different Agar - MicroBio

Ground Beef Bacteria

Questions please help

Breast Cancer Problem

Serial dilution/dilution factor problem

Choose all correct answers. The plasma membrane...

The specific growth rate (u) is a bettter measure of the cell's growth rate than dX/dt •Why ?

A selective media

f a bacterial culture is started with 50 cells, what will be the cell number after four generations? Assuming there was no cell death. (5 Points) a) 100 b) 200 c) 400 d) 800

The process in which all organisms and pathogens are destroyed is called ------. (5 Points) a) Disinfection b) Sterilization c) Antisepsis d) Pasteurization

What is a pure culture, and why is it important in microbiology?

What is the Spread Plate Technique used for? (5 Points) Isolation of bacteria since it will result nicely separated single colonies

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