694 Answered Questions for the topic microbiology

Microbiology

10/27/18

Whats a gram stain
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Microbiology Science Biology

10/14/18

Evaluate the who definition of health published in 1948 is that health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.
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Microbiology Dillution

06/25/18

You are given a drug that is at a concentration of 50mg/mL and asked to dilute it by a factor of 10 with sterile water
You are given a drug that is at a concentration of 50mg/mL and asked to dilute it by a factor of 10 with sterile water. How many mLs of drug and how many mLs of sterile water will you need and what... more
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Microbiology Biology Genetics

06/03/18

what is the name of the mechanism by which plasmid is replicated
Microbial Genetics.
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Microbiology

04/24/18

How do memory T-cells prevent illness with subsequent pathogen exposure?
How do memory T-cells prevent illness with subsequent pathogen exposure? Please help with this question.
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Microbiology Science Biology Lab

04/23/18

What grows on an alkaline peptone broth apart from Vibrio?
I have done an experiment where growth on an alkaline peptone was monitored and then we innoculated a TCBS media, however no growth occured on the TCBS media so i was wondering what else could... more
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04/13/18

How could SDS Page and immunoblot be used to determine whether a viral protein was a glycoportein?
How could SDS Page and immunoblot be used to determine whether a viral protein was a glycoportein? Can u please explain how it works?
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04/11/18

how can IHC be used to judge the virulence of 2 neuro-invasive virus strains in mouse infections?
can u also reference a good website or paper that explains it?  
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Microbiology Biology Genetics

04/03/18

Phylogenetic Tree
How would the following bacteria be placed in a phylogenetic tree? Desulfurococcus, Geogemma, Borrelia, Acidimicrobium, Deinococcus    
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04/03/18

You are told to prepare 70% v/v bottle of ethanol to spray down a laminar flow hood.
You are told to prepare 70% v/v bottle of ethanol to spray down a laminar flow hood.The maximum volume on the spray bottle is 250 ml. You have a 95% v/v stock bottle bottle of ethanol. What volume... more
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04/03/18

What volume in ml do you need to prepare 100 ml a 10 mM solution of Tris....
What volume in ml do you need to prepare 100 ml a 10 mM solution of Tris (MWT 121 g/mol) from 500 ml of 0.5 M stock?
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04/03/18

What amount in gram do you need to prepare 25 ml of a 10% w/v solution of Tris (MWT 121 g/mol)?
What amount in gram do you need to prepare 25 ml of a 10% w/v solution of Tris (MWT 121 g/mol)?
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04/03/18

What amount in grams do you need to prepare 100ml of a 10mM solution of Tris (MWT 121 g/mol)?
What amount in grams do you need to prepare 100ml of a 10mM solution of Tris (MWT 121 g/mol)?
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Microbiology

04/03/18

What are the three ways microbes can interact with humans?Mutualism, Commensalism,Parasitism. Give an example of an organism for each.
What are bacteria ways that Mutualism, commensalism, and parasitism can interact with humans?   How can diarrhea help bacteria in the infection process?   Name two specific exotoxins and the... more
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03/13/18

What weight in grams would you need of Tris....
What weight in grams would you need of Tris (MWT 121 g/mol) to prepare 250 ml of a 10% w/v solution?
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03/13/18

What volume in ml would you need to prepare 500 ml of a...
What volume in ml would you need to prepare 500 ml of a 50 mM solution of Tris (MWT 121 g/mol) from 1L of a 1M stock?
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03/13/18

You counted 100 colonies of bacteria on a LB plate....
You counted 100 colonies of bacteria on a LB plate. The plate was created using 100 ul of a 1:100000 dilution. What was the number of bacteria in the original stock?
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Microbiology

03/09/18

Hepatitis C virus enters by receptor-mediated endocytosis. What would happen if the endosome does not fuse with the lysosome?
A. In the absence of lysosomal fusion, the pH of 6 - 6.5 will stop viral uncoating and release from the endosome will be inhibitedB. In the absence of lysosomal fusion, Hepatitis C virus will... more
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03/01/18

You count 1 x 10^6 cells/ml of cells with a hemocytometer,....
You count 1 x 10^6 cells/ml of cells with a hemocytometer. What volume in microliters do you need to seed a dish with 1 x 10^3 cells?
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03/01/18

How many CFU/ml did you have in the original sample ?
You count 150 bacteria colonies on a petri dish. How many CFU/ml did you have in the original sample if you created the plate with 100 ul of a 1:10000 dilution?
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Microbiology Biology Chemistry Dillution

03/01/18

You have been given a 1 L stock of 1M NaCl (MWT 58.4 g/mol). What volume do you need to prepare 100 ml of a 10 mM stock?
 Homework question :(   You have been given a 1 L stock of 1M NaCl (MWT 58.4 g/mol). What volume do you need to prepare 100 ml of a 10 mM stock? 
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Microbiology

02/20/18

Two cells with generation times of 30 minutes are inoculated into a culture medium. How many cells are there after 5 hours
I need to understand how to do the math for generation science questions such as this one. if you could help me that would be great!
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Microbiology

02/20/18

An experiment began with 2 cells and ended with 128 cells. How many generations did the cells go through
I had a question on how to solve these types of problems exactly and was wondering if you could help me. 
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01/22/18

Are genes that code for β-lactamases, also known as penicillinase passed by vertical or horizontal transfer?
These enzymes are produced by E. coli with resistance to penicillins
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Microbiology

11/20/17

The Vibrio enterotoxin is an example of an endotoxin.
microbiology
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