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How long can agar be inside of a petri dish with no bacteria growing on it?
Agar can remain in a petri dish for a few weeks without bacteria growing on it, as long as it is stored properly. It is important to keep the agar dishes sealed and stored in a refrigerator at the appropriate temperature to prevent bacterial contamination.
What is the difference between partly cloudy and partly sunny?
Believe it or not, there is a difference. It relates to the average amount of cloud cover expected. Would you believe partly sunny means more cloud cover than partly cloudy? Can be confusing to the public...mostly sunny means more sun than partly cloudy does, while partly sunny means more clouds than partly cloudy does. Anyway, from least cloud cover to most, the scale is: sunny, mostly sunny, partly cloudy, partly sunny, mostly cloudy, cloudy. Mostly sunny means more sun than clouds, partly sunny means more clouds than sun, and partly cloudy generally means an equal amount of clouds and sun.
Can plants only live on land?
No, plants like seaweed and algae live completely or partly underwater. -A.D.
What are anchorage dependent cells?
Anchorage-dependent cells are cells that require attachment to a solid surface or extracellular matrix to grow and proliferate. These cells rely on contact with a substrate for survival and function properly only when attached to a surface. Examples include fibroblasts and epithelial cells.
What tools are used by a bacteriologist?
One may think that the obvious answer here would be a microscope. However, after many years as a microbiologist, I have learned that it takes more than just a microscope. A good screwdriver to tinker with the scope every once in a while is good also. Some of us use incubators and autoclaves. Some of our other gadgets have moving parts. These all need to be maintained. Our bacteria need to be kept warm, our viruses need to be kept cold; thus, a thermometer is a necessary tool. A pH meter, a dissolved oxygen meter, the list can go on and on. So, please don't think that a microscope is the only tool we rely on .
Why is a Petri dish sealed with sticky tape?
A Petri dish may be sealed with sticky tape to prevent contamination from airborne particles or other microorganisms present in the environment. This helps maintain a sterile environment for bacterial or fungal cultures to grow without interference.
If bacteria in a petri dish double the area they cover every day if the dish is covered after 16 days on what day was only one quarter of it covered?
Day 14.
How do you grow bacteria using a petri dish?
To grow bacteria on a petri dish, you will need several items.First you will need a petri dish with lid. The petri dish must contain agar, which is the source of the nutrients for the bacteria you want to grow.Then you will need sterile cotton tipped applicators. They must be sterile so that the bacteria you put in your dish is the only bacteria there, and not extra from an exposed cotton swab. There are also other laboratory tools that can be sterilized to pick up bacteria with.Then you need your source of bacteria.When you know what type of surface you will be swabbing, isolate one area, and swab it thoroughly with the cotton tipped applicator. Then, immediately swab it gently onto the agar surface with a back and forth motion.If testing two different specimens with one petri dish, be sure to only swab half of each side with each specimen. On the bottom of the dish, use a marker to note which side contains which sample.After preparing your petri dishes, place the lid on them and be sure they are labeled for easy identification. Then your specimens need to be incubated. Different types of bacteria thrive better at different levels of incubation and time. See a laboratory manual for incubation times.
Explain how natural selection can give rive to a population of antibiotic resistant bacteria?
Consider the following scenario: An antibiotic is applied to a petri dish of bacteria. The antibiotic will kill of most of the bacteria, but some will remain that are immune to the antibiotic. Therefore, only the immune bacteria will reproduce. Soon, the whole petri dish will be full of bacteria that is immune to the antibiotic. Nature "selects" the immune bacteria for survival.
What are medically important bacteria often grown on?
The only culture medium I know are called petri dishes. The bottom is coated with a media that encourages growth, if any bacteria are present in the specimen. The petri dish remains covered/closed and placed in an area that incubates the specimen. IF bacteria are present, it will grow and multiply into colonies often big enough to see with the naked eye, i.e. without a microscope.
What is a sentence for the word partly?
Moving out of my parents' house, I was partly sad but mostly happy.Partly, it was my fault I didn't get to school on time.Though his answer was partly correct, he wrote the wrong date for the signing of The Declaration of Independence.
Which country divides Europe and the middle east?
Turkey is the only country which exists partly in Europe and partly in the middle east.
Is Dish TV just for television only?
Yes, Dish TV is for television.
What are 5 adaptations of an small eared zorro?
I only know 1.It's paws are partly webbed.Maybe it's partly aquatic... Ram
What occurs when a dominant allele for a trait is only partly expressed?
Meiosis
Does 10000 km go into 1 meter?
Only partly . . . 0.0000001 of it does.
Why is foam heavier than air?
Because its only partly air.
