Microbiology is the study of organisms that are too small to be seen with the naked eye. This includes organisms like bacteria, fungi, protozoa, and others.
2
votes
1answer
64 views
Where would Saccharomyces cerevisiae be found in highest concentrations in environment?
I have bakers asthma specifically to Sc yeast, and know to avoid bakeries, breweries, etc. Have figured out to not disturb rotting leaf piles, and fermenting bark mulch.
Where else.? What percentage ...
2
votes
1answer
39 views
Salvaging a plasmid from a cell culture stored at the incorrect temperature
I have E. coli with transformed plasmid on agar in a vial. It has been stored at -20 degree C without glycerol stock for 18 hours.
This is a continuation of: Survival of E. coli on agar plate at -20 ...
2
votes
2answers
70 views
E. coli, risk of infection?
There has been a warning about E. coli contaminated water in South Florida. Now I'm wondering are there empirical data or historic cases which show a correlation between E.coli levels in tap water and ...
2
votes
1answer
33 views
By what mechanism is Streptococcus bovis acting as a risk factor for colorectal cancer?
Streptococcus bovis bacteremia/endocarditis is considered a risk factor for colorectal cancer. What pathophysiological mechanism may link the two together?
2
votes
1answer
101 views
How was the diversity between ethanol fermentation and lactic acid fermentation evolved?
Quite simply, some organisms metabolize glucose under anaerobic conditions via Glucose->(2) Pyruvic Acid->(2)Ethyl Alcohol. Some organisms, however, metabolize to lactic acid.
When did such a process ...
2
votes
0answers
12 views
How is the appropriately-stratified gut microbiome acquired in organisms performing horizontal transmission?
I am studying horizontal transmission of primary symbionts in insect reproduction. This reminded me of an earlier question I had asked, in which I learned that humans analogously acquired their ...
1
vote
1answer
46 views
Colonial Cells Demonstrating Cell Specialization
Are there any living examples of cellular colonies demonstrating very primitive cellular specialization? If so, what do we know about how they assimilate? How independent are the individual cells ...
1
vote
1answer
101 views
Can the RNA in the HIV virus make viral enzymes without entering the nucleus?
If the provirus was not formed yet, can the virus make viral enzymes?
(I know that it already has some, but supposing it doesn't)
1
vote
1answer
45 views
“Oblong to Allantoids” … Is it valid?
I read on the text book:
The characteristic of Dinemasporium are: superficial, cupulate to Discoid conidiomata with brown satae, Phialid conidiogenous cells that give rise to hyaline, oblong to ...
1
vote
1answer
101 views
What does “cellular” mean in this context?
I came across a confusing word when I was reading a Scientific American story, “Controversial Spewed Iron Experiment Succeeds as Carbon Sink” (by David Biello). It goes like this:
“One key to the ...
1
vote
1answer
367 views
Is there a free alternative to Gelcompar for comparing banding patterns across multiple gels?
In order to run my microbial community samples from my experiments through DGGE, I was required to use multiple gels.
Thus it is necessary to compare banding patterns across more than one gel. ...
1
vote
0answers
17 views
Looking for detailed nutrient/energy flow at the bottom of the freshwater food chain
I am trying to model the production and consumption of nutrients and waste at the bottom of the food chain in freshwater ecosystems.
I can only find broad information on the Internet and don't know ...
1
vote
0answers
20 views
What is a good review book/source for microbiological diagnosis?
I am trying to find the diagnosis figure for different bacteria where phases are illustrated.
I am using at the moment: 1) First Aid for the USMLE Step 1 2013 and 2) Medical Microbiology by Murray et ...
1
vote
0answers
41 views
Can viral proteins cause infection? [duplicate]
Possible Duplicate:
HIV Rapid Tests
Can proteins found on the surface of RNA viruses cause infection without the presence of the actual RNA and other components used in the virus?
1
vote
0answers
44 views
Solid phase use in HIV rapid tests
I have another question in regards to my HIV test research. The rapid tests like Orasures Oraquick contains a strip of synthetic peptides that are used to represent proteins found in the envelope ...
1
vote
0answers
32 views
Where can I find approximate rates of sequestration of CO2 for different species of algae?
For a study, I want to compare the rates of CO2 sequestration and fixation of a few different species of algae.
I could not find any data on the sequestration rates. Any pointers to where I can find ...
0
votes
1answer
62 views
Would two species of yeast with similar genome sizes have the same number of genes or chromosomes?
Similar organisms generally have similar genome sizes. Given this, would two species of yeast have the same number of genes and chromosomes?
Edit: Fixed with thanks to @daniel-standage
0
votes
1answer
41 views
What are the differences between G+ and G- bacteria?
The distinction between Gram-positive and Gram-negative bacteria is based upon the Gram staining method, that reflects the bacterial wall physical properties.
However, this classification involves ...
0
votes
1answer
20 views
First genomic survey of human skin fungal diversity
"The researchers found that a single type of fungus, belonging to the genus Malassezia, is predominant on the head and trunk. Hands, which harbor a great diversity of bacteria, are home for relatively ...
0
votes
1answer
59 views
Lineage selection in plasmid evolution
I've been reading through Paulsson (2002) and I am not sure what he means by "lineage selection" in the second to last section. The paper deals with plasmid replication, and mostly concentrates on the ...
0
votes
1answer
22 views
Definition of Dye- Reduction Test?
Can some one give a simple explanation or definition on what a dye-reduction test is.
0
votes
0answers
23 views
What is this genital infection?
I got this data with units CFU/ml:
staphylococcus epidermidis 10E2
Bifidobacterium sp 10E2
Streptococcus sp 10E3
Klebsiella sp 10E5
Prevotella sp 10E6
It does ...
0
votes
0answers
17 views
Endophytic Xylariaceae: diversity and taxonomy inferred from rDNA sequence analyses
"Thailand is considered as one of the areas containing a high percentage of unknown taxa of Xylariaceae (Rogers 2000). In Thailand, several studies on endophytic fungi have been documented, namely, ...
0
votes
0answers
34 views
Wheat anthracnose outbreaks caused by Colletotrichum cereale in the USA
"Wheat anthracnose outbreaks caused by C. cereale were problematic during the 1940s in the USA, but presently do not limit production of this crop, despite the fact that the fungus still inhabits ...
0
votes
1answer
62 views
Writing methods section on PCR amplication in a paper
Considering that I am writing a paper for a journal, could the following phrase be understood? or should I put the 'step-by-step' way by giving numbers?
PCR Amplification and sequencing
PCR ...
0
votes
1answer
18 views
Multiplication to formalize Microbiological Processes
I am not from the field, but have a question regarding modeling in biology:
I know that some processes can be modeled with the mathematical multiplication operation, and wondered if anyone could ...
-2
votes
0answers
28 views
International standard to prepare an International journal [closed]
Any of you could give the link or reference regarding International standard to prepare an International journal on microbiology field?
