Dictionary » S » Streak

Streak

streak

1. A line or long mark of a different colour from the ground; a stripe; a vein. What mean those coloured streaks in heaven? (milton)

2. A strake.

3. (Science: chemical) The fine powder or mark yielded by a mineral when scratched or rubbed against a harder surface, the colour of which is sometimes a distinguishing character.

4. The rung or round of a ladder.

Origin: OE. Streke; akin to D. Streek a line, stroke, G. Strich, AS. Strica, Sw. Strek, Dan. Streg, Goth. Stricks, and E. Strike, stroke. See Strike, Stroke, and cf. Strake.


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URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!

... Blue Vegetative cells. SPORE REACTION (-) ACID FAST STAINING (-) NUTRIENT BROTH CULTURE- Quite turbid, slightly cloudy, no skin NUTRIENT AGAR STREAK- Shape – Cocci, Yellow, 0.2-0.5m Glossy NUTRIENT AGAR STAB: Aerobic GELATIN STAB: No Proteolysis THIOGLYCOLLATE MEDIUM- Anaerobic SEMI SOLID ...

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by microbiologyhelp
Wed Nov 20, 2013 6:09 pm
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 2833

Is there an insect that behaves this way?

... barn, there have been these green lights flitting around. Maybe flitting isn't the right word. It is more of a very straight, fast moving green streak. The color is pretty much the same as a lightning bug but this doesn't seem to behave like any lightning bug I've ever seen. Lightning bugs are ...

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by sushiboy
Sun Jul 29, 2012 10:07 pm
 
Forum: General Discussion
Topic: Is there an insect that behaves this way?
Replies: 6
Views: 2829

can old culture of s. aureus not ferment mannitol

Is it possible for an old culture of s. Aureus to not be able to ferment mannitol (on an MSA plate) efficiently? The first time that I streak my unknown on an MSA plate, there was growth and fermentation of mannitol. Through other biochemical test, I was able to narrow it down to S. Aureus. ...

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by thuydeebird
Sat Apr 21, 2012 6:22 pm
 
Forum: Microbiology
Topic: can old culture of s. aureus not ferment mannitol
Replies: 0
Views: 680

Re: NEED HELP WITH MY UNKNOWN GRAM POSITIVE ORGANISM PLEASE??

... salt agar = no colony growth in media whatsoever and the medium stays pink. 4) catalase negative. 5) coagulase negative. I suggest that you re-streak a new mannitol salt agar plate because i think that based on your gram stain and catalase result then you might be dealing with a staphylococcus ...

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by mariah000
Sun Mar 18, 2012 7:50 pm
 
Forum: Microbiology
Topic: NEED HELP WITH MY UNKNOWN GRAM POSITIVE ORGANISM PLEASE??
Replies: 1
Views: 14609

Colony growth

I need help with confirming what the colonies on my streak plates might be. For some reason the plates did not streak as well as normal. There was no growth on the mannitol plate but there was some on the nutrient agar and mac plates. I am pretty sure ...

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by sci2012
Sat Mar 10, 2012 9:43 pm
 
Forum: Microbiology
Topic: Colony growth
Replies: 2
Views: 1888
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