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If you are talking about testing minerals, the streak plate causes powder from the mineral to come of and you rub your finger on the plate after, and see what color the dust the mineral makes is.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoTry holding the loop at a different angle or try getting a smaller amount (a small amount of bacteria will go along way).
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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.
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. .
What is a streak plate?
A streak plate is a surface of unglazed ceramic, used to find the true color of a mineral specimen by drawing the specimen across it. The color of the resultant powder is referred to as the streak or streak color of a mineral.
What is the color of a mineral in powder form?
It's called the minerals streak
What advantage does the streak plate method have over the pour plate method?
A disadvantage of the streak plate technique could be colony isolation problems. If the streaking technique is not done properly or if there is too much of an organism present on the inoculating loop then the cells can cluster and form what looks like one colony but it can actually be a couple colonies (made from a couple cells). This can cause an inaccurate colony forming unit count.
What is shale's streak?
Shale normally leaves a brown streak on unglazed porcelain plates. However, shale can also leave a white streak on unglazed porcelain plates.
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.
Why do streak plates need to be dry before inoculated?
If by inoculated you mean used, here is my answer if that is true; streak plates need to be dry because the powder left behind may react and change color to whatever that liquid is on the streak plate.
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.
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 do we use streak plates to test minerals?
They show you the true color of the mineral. Small impurities can cause big changes in the color of a mineral.
Can streak or spread plates isolate pure cultures from mixed bacteria?
YES
What does the streak plate method have over the pour plate method?
It is more likely to give individual colonies regardless of the concentration of the original source. With pour plates, you might have to use several plates with different dilutions of inoculum to get individual colonies.
How do you use streak in a sentence?
a black mineral can have a brown streak.
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.
Use the word streak in a sentence?
I like that streak of blonde in your hair. I saw a jet streak across the sky.
How can you use the word streak in a sentence?
The rock left a colored streak on the marble.
