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Why is condensation on the agar undesirable?
Condensation on agar can lead to uneven distribution of nutrients and moisture, making it difficult to interpret results. It can also provide a conducive environment for microbial contamination, affecting the purity of the culture. Additionally, excess moisture can affect the growth and development of the desired organisms.
Why are agar plates stored inverted need two answers?
Storing agar plates inverted helps prevent condensation from collecting on the agar surface, which could interfere with bacterial growth or lead to contamination. Storing agar plates inverted also prevents any moisture present in the lid from dripping onto the agar surface, which can disrupt the growth of the bacterial colonies.
How is proper placement of agar plate in the incubator?
An agar plate should be placed upside down in the incubator to keep water drops off the agar and prevent the bacteria from drowning. The bacteria are incubatored at 30-40*c for one to three days. the bacteria feed from the nutrients in the agar and reproduce to form colonies of millions of bacteria. Source: NCEA level one science study guide 1.3 biology AS 90188
How old is the Arabian desert?
The Arabian Desert is estimated to be around 30 million years old. It began forming during the Late Eocene-Early Oligocene period due to the movement of tectonic plates and changes in climate.
What is pour plating?
Pour plating is a method of separating one species of bacteria from another by diluting one loopful of organism into three liquefied nutrient agar plates, with the hopes that one of the plates poured will provide an ideal sample for isolation.
Why are inverted plates during incubation?
Because during incubation moisture will form at the top of the petri dish. Inverting the dish prevents it from dropping into whatever you have in the petri dish.
Why are petri plates inverted for incubation?
it is to prevent the moisture formed due to condensation of the agar ,to mix with the components present in the petri plates, else causes contamination
What two things occur during incubation of the mueller hinton plates?
During incubation of Mueller Hinton plates, bacteria colonies grow and multiply. Additionally, antibiotics diffusing from antibiotic disks create zones of inhibition around disks indicating the susceptibility of the bacteria to those antibiotics.
Why petriplates keep in inverted position in incubator for bacterial growth?
There is always some water condensation on the inside of the lid if it's kept in the 'regular' position. If water drips back to the culture the indivodual bacterial colonies will wash together. Inverted incubation prevents that.
Why is condensation on the agar undesirable?
Condensation on agar can lead to uneven distribution of nutrients and moisture, making it difficult to interpret results. It can also provide a conducive environment for microbial contamination, affecting the purity of the culture. Additionally, excess moisture can affect the growth and development of the desired organisms.
Why are agar plates stored inverted need two answers?
Storing agar plates inverted helps prevent condensation from collecting on the agar surface, which could interfere with bacterial growth or lead to contamination. Storing agar plates inverted also prevents any moisture present in the lid from dripping onto the agar surface, which can disrupt the growth of the bacterial colonies.
Why did the instructions for making streak and spread plates emphasize inverting the plates before storing them for incubation?
inverting plate will allow fresh air mostly oxygen gas to pass through them and allow bacteria to grow
The use of plastic bags for anaerobic incubation?
For long incubation periods,esp. for spread plates ,the agar surface can be dehydrated and this can cause inhibition of low aw sensitive microorganism like gram- rod shape bacteria. For this reason the petridishes are packed in plastic bags
When did Mexico separate from South America?
Mexico (part of the North American Plate) and South American plates began to separate during the Triassic Period.
Does missourri have a grace period for expired plate license?
Yes, Missouri does provide a grace period for expired license plates. If your plates are expired, you have a 30-day grace period to renew them without facing penalties. However, it's important to note that you are technically still required to have valid registration while driving, and law enforcement may issue tickets for expired plates even during this grace period. Always check with the Missouri Department of Revenue for the most current regulations.
What lighting was used in medieval theater?
Lighting for indoor theatre during the medieval period was done with candles and sometimes with sunlight reflected with large brass plates.
What is a placoderm?
The placoderm is actually an extinct fish, thought to have lived during the Devonian period and is thought to have had broad flat bony plates covering its body.
