684 Answered Questions for the topic microbiology

Microbiology Materials Lab Techniques

07/22/19

Help with preparing Congo Red TSA?
So I want to make Congo Red TSA. My instructor gave some hints but I still have some questions: 1. I start by making two stock solutions: 20 mg/ml of congo red and coomassie in two different... more
Follows • 2
Expert Answers •1
Microbiology

07/22/19

Counter Staining with Safranin?
After Gram Staining, We use counter staining to find out that is there any gram(-) bacteria present on the prepared slide. My question is- **What component in the cell wall of gram(-) bacteria is... more
Follows • 2
Expert Answers •1

07/22/19

How can I differentiate between polysaccharide bands and protein bands on SDS-PAGE?
I tried to extract bacterial polysaccharide but after running a SDS-PAGE I couldn't differentiate between the polysaccharide band and protein ones. I face a problem of moving up of the samples from... more
Follows • 1
Expert Answers •1

07/22/19

How can E. coli affect C. elegans expression?
Plasmids can be transferred to *E. coli*. These transformed *E. coli* can be fed to *C. elegans* to silence its gene expression by RNAi. How can *E.coli* release RNAi to *C. elegans*? Even if we... more
Follows • 2
Expert Answers •1
Microbiology Biology Mcat

07/20/19

What happens when you have a inflammatory response?
Follows • 2
Expert Answers •3

07/20/19

Can tardigrades survive being eaten?
Compared to a tardigrade, the cockroach seems fragile. But can tardigrades survive the acidic environment of being eaten by most animals?
Follows • 1
Expert Answers •1
Microbiology Epidemiology Pathology

07/19/19

Have there been any positive public health effects due to UV lights?
Occasionally, in hospitals and in eating establishments in the US, they have industrial grade UV lights in sconces attached to the wall (though they seem to be less prominent as the years go by). I... more
Follows • 1
Expert Answers •1
Microbiology

07/19/19

How are bioremediation microbes removed from the environment once they perform their function?
In the case of bioaugmentation, microbes are introduced into the environment to clean up and absorb a certain pollutant. My question is how is that microbe then removed from the environment once it... more
Follows • 1
Expert Answers •1
Microbiology Organic Chemistry

07/19/19

gastric juice have a ph of 1 or 2. this would indicate which of the following?
Follows • 0
Expert Answers •1
Microbiology Human Biology Teeth

07/19/19

How can fresh cavities form at the margins of sliver amalgam fillings on teeth?
Silver amalgam fillings predominantly contain silver a known bactericidal agent and mercury which a known toxin and has bactericidal property. So how is it that the plaque bacteria survive near the... more
Follows • 1
Expert Answers •1
Microbiology Immunology

07/18/19

Can immunity to diseases vary by populations?
A common explanation for the massive population decreases of isolated societies upon contact with Europeans during the Age of Discovery is that the natives lacked immunity to newly introduced... more
Follows • 1
Expert Answers •1

07/18/19

The process of cellular reproduction in bacteria is known as?
Biology (Cells) Microbiology,practice question for a health occupation entrance exam testing.
Follows • 1
Expert Answers •1

07/18/19

Fermentation to acetic acid?
How much time is needed for the fermentation to acetic acid production cycle, and the conversion of apple vinegar in a sealed container incubated at 37 °C? Should be in the fully... more
Follows • 2
Expert Answers •1
Microbiology Biochemistry Enzymes

07/17/19

Do disaccharidases require a cofactor or coenzyme to function?
I'm doing research on lactose intolerance and am curious if disaccharidases (enzymes that break down disaccharides) require a cofactor or coenzyme to function? Reviews or references would be... more
Follows • 1
Expert Answers •1

07/15/19

Calculation of the bacterial growth rate from a spectrophotomer growth curve?
Typically the microbial growth in liquid cultures is monitored by turbidity. Data is obtained with a spectrophotometer to measure optical density at 600nm. The slope of the bacterial kinetic curve... more
Follows • 1
Expert Answers •1

07/15/19

Can a vaccine or antidote be administrated via gases or sprays?
On TV or in movies a gas or spray containing a vaccine/cure/antitoxin is released and everybody is saved. Is this something plausible in real life? Specific examples would be appreciated.
Follows • 1
Expert Answers •1

07/15/19

Can we investigate the cell biology of extinct microorganisms?
I know that there are microfossils, but not if we can we know about the organelles, genetics or macromolecules of the cells that left them behind.
Follows • 1
Expert Answers •1
Microbiology

07/15/19

Can some prokaryotic cells be larger than eukaryotic cells?
Can the sizes overlap in some bacterial species? My science teacher claims so. My research says the opposite. Can someone confirm?
Follows • 1
Expert Answers •1
Microbiology Biochemistry Enzymes

07/12/19

Does alpha-amylase from different species have different *optimal* conditions?
Do the optimal conditions for the enzyme isoforms differ between species? Specifically, do the optimal pH and temperature for alpha-amylase differ for that enzyme produced by *B. lichiniformis* and... more
Follows • 2
Expert Answers •1
Microbiology Immunology Hiv

07/12/19

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)
Follows • 1
Expert Answers •1
Microbiology Microscopy

07/12/19

Can living cells be imaged with electron microscopy?
According to this article from October 2009, http://news.mit.edu/2009/electron-microscope > "Electron microscopes are the most powerful type of microscope, > capable of distinguishing even... more
Follows • 1
Expert Answers •1

07/11/19

Can bacteria metabolize fatty acids for fuel?
I'm not a microbiologist, but rather a physiologist curious about microbial metabolism. Much like humans bacteria can utilize glucose, but when it comes to long chain, medium chain, or short chain... more
Follows • 2
Expert Answers •1
Microbiology Pathology

07/11/19

Difference between protozoa, protists, protoctista?
Are protozoa, protists, protoctista different classes of organisms or simply different names for the same?
Follows • 1
Expert Answers •1

07/11/19

Can mutation rate be increased for instance by mutagenesis targeting the DNA polymerase?
I am studying a non-cultivable bacterium living in an insect host, and I would like to generate some random mutants of this bacteria while preserving the insect. I am wondering if one way to do so... more
Follows • 1
Expert Answers •1
Microbiology Zoology Nutrition Food

07/11/19

Can we digest food as well as herbivores?
I heard some guy say that we can't digest plant food as well as herbivores. Which seems weird to me seeing as how humans can survive without any nutrient deficiencies besides b12 on only plants but... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.