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Compare the pour plate and streak plate methods of isolating bacteria?
Wiki User
∙ 9y ago
I got the answer but you hav ta do your labreport yourself..haha
Whoever wrote this is an a$$hole. I wish that you went to my school so I could kick your aXX..Ha ha back at you, jerk!
thanks jerk,,that was really helpful..
anyway guys, here is the correct and precise answer, hope it will help u to complete ur lab repor..:)
In streak plate method, After the first sector is streaked in dish, the inoculating loop is sterilized and an inoculum for the second sector is obtained from the first sector. The same is done for third and fourth sector. Thus this is a dilution process. Eventually, very few cells will be on inoculating loop, a single cell will drop from it as it is rubbed along the agar surface. These develop into separate colonies.
Whereas, in the pour plate culture, sample is diluted several times to reduce the microbial population sufficiently to obtain separate colonies when plating. After the agar has hardened each cell is fixed in place and forms an individual colony.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoA streak plate method involves the rapid moving method for separating bacteria in a mixed population. A pour plate method, meanwhile, involves the dilution of a mixed population of bacteria into tubes of nutrient agarmedium, which is then poured into a petri dish for incubation.
Wiki User
∙ 13y agoThe streak plate method makes it easier for colonies of bacteria to grow. It also generally leads to individual colonies that look like small dots, rather then simply a mat of bacterial growth.
Wiki User
∙ 11y agothis is one of the pure culture techniques to separate and identify the individual colonies of each organisms and we done this method three types of streaking methodology like primary,secondary and tertiary mode from mother culture
Wiki User
∙ 11y agoThe pour plate method requires somewhat less skill than that required for a good streak plate; a disadvantage, however, is that it requires more media, tubes, and plates.
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Could some bacteria grow on the streak plate and not be seen using the pour plate technique?
Put simply - yes. Some strictly aerobic organisms will not grow in a pour plate. They may, however proliferate on a streak plate. Also consider the posibility of experimental error. The culture may have been added to the molten agar when it was too hot for the organisms to survive.
What happens if you rub the mineral across a streak plate but the mineral does not leave a streak?
The lack of a streak would indicate that the mineral is harder than the streak plate, or the color of the streak is the same as the color of the streak plate.
What is a streak when it comes to talking about science?
'streak' is the color that a mineral will leave when rubbed on a piece of unglazed porcelain. It is used to help identify the mineral. For example, arsenopyrite looks very similar to gold, but has a dark grey or black streak. Gold has a yellow streak.
Colors of a line of fine powder from a mineral?
It is called the streak, and refers to the color of the powdered mineral that is left on a ceramic streak plate after the mineral specimen has been drawn across it. It may be different than the color of the observed specimen and is representative of the true color of a mineral that does not include impurities or traces of other minerals, or has been irradiated or heated.
What is the color of a mineral's powder?
It's called the minerals streak
What is the simplest technique for isolating bacteria in growth media is referred to as the?
Streak-plate method
What will a streak plate with two species of bacteria look like?
A streak plate, with 2 species of bacteria, will show the bacteria in straight lines. Each species of bacteria will be separate from the other.
Are the different streak methods appropriate to the cell densities recovered?
jikn:LKmL'
Where should colonies appear in the case of streak plates?
When using streak plates, the colonies should appear along the streak lines. This is where the bacteria have been introduced and is the first place they will grow.
Can you do a gram stain from 3 day old nutrient agar plate or should i do anohter t streak and let it grow for one day nd then do gram stain?
there should be no problem with doing a gram stain on a 3 days old bacteria strain unless your working with spore making bacteria, then you would need to do another streak, unless your familiar with spore stain methods but you should keep the bacteria cold at 4 degrees if you dont want them to die.
Why are agar plates dried before being used for the preparation of dilution streak plates?
perhaps it is easier to streak that way, i mean when the agar is set and dry. .
Why obtain pure culture of bacteria from a mixed culture?
i obtain pure culture of bacteria from a mixed culture for obtain pure one bacterial culture
Can streak or spread plates isolate pure cultures from mixed bacteria?
YES
What is the purpose of the streak for isolation?
By using streak plate technique to spread a clinical sample out on the surface of a growth medium individual types of bacteria can be isolated
How is a minterals streak determinded?
Streak color is determined by scraping the mineral across a a streak plate, (which is made of unglazed porcelain), and then observing the color of the streak, which is left on the plate. Note that some minerals do not leave a streak, as they are too hard. Thus, it is important to learn other identification methods, to use in conjunction with streak color, in order to identify minerals.
Why is the streak-stab technique preferred rather than incubating the plates anaerobically?
The streak-stab technique is preferred over incubating the plates anaerobically because when isolating colonies allows biochemical testing to be performed. When the plate is incubated anaerobically it lacks oxygen and can not be biochemically tested.
What are streak plates used for?
Streaking is used in microbiology to isolate a strain from a species of bacteria, so that this sample can be grown on a new culture.. Streak plates are used in this process to great effect.
