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Why are plates with 25 to 250 colonies used for calculations?
Juliewiles
Well UC Student, counting a plate between 20 and 200 colonies provides an accurate estimation of the total number of bacteria. Counting plates with less than 20 colonies would providen unreliable data, while plates with 200 or more colonies is too difficult to do with the human eye.
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A-UNIT
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoA plate with less than 25 colonies is inaccurate because a single contaminant could influence the results.
I am a soon to be nursing student.
-Sid
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According to the hypothesis of continental drift how would a world map have changed over the last 250 million years?
The plates of the earth, all of the continents moved, bumped into each other, and apart.
Is 250 kilogram heavy?
depends on what is 250 kg 1 kilogram = 2.20462262 pounds 250 kg = (250 x 2.20462262) = 551.155655 pounds
How many miles in 250 meters?
250 meters = 0.155 miles.
How much in kilograms is 250 pounds?
250 pounds = 113.4 kilograms.
Can you run a 10 gauge wire 250 feet to the barn on a 120 amp breaker in the house If not what amp breaker should I use?
#10 cable is no good for 120 amps, you need #2 cable, and it can be used at a distance of 250 ft.
How thick are the earth's plates?
50 to 250 miles thick
How many times can 250 go into 2000?
According to my calculations, 250 can go into 2,000 8 times
How do you convert 250 grams of white uncooked rice to cup measurements?
1 cup white uncooked rice= 185gms 250 gm=1.35 cups
What is the purpose of DVLA Reg?
The purpose of DVLA Reg is to be able to have personalized numbered plates for ones vehicle. This pertains to British license plates and prices start at 250 British Pounds.
How many square feet 250 x 53.5?
Multiply the two dimensions to get the area. In this case the calculations gives you 13,375 square feet.
What is 1776 plus 249 added in two different ways and 1776 minus 249 subtracted in two different ways but working out all four calculations entirely in Roman numerals with explanations?
Under today's modern rules now governing the Roman numeral system the equivalent of 249 when converted into Roman numerals is now considered to be CCXLIX which does not lend itself quite easily to arithmetical operations but there exist credible evidence to suggest that the ancient Romans would have carried out the requested calculations as follows:-MDCCLXXVI+ICCL = MMXXV => 1776+(250-1) = 2025MDCCLXXVI+CCXXXXVIIII = MMXXV => 1776+249 = 2025MDCCLXXVI-ICCL = MDXXVII => 1776-(250-1) = 1527MDCCLXXVI-CCXXXXVIIII = MDXXVII => 1776-249 = 1527Note that in mathematics -(250-1) becomes -250+1 or as 1-250The above calculations were fairly simple and straight forward to work out but for more complicated calculations the Romans would make use of an abacus calculating device.QED
What is moxymax 250 used for?
No
What is the third harmonic of the frequency of 250 Hz?
It is three times the fundamental frequency. Scroll down to related links and look at "Calculations of Harmonics from Fundamental Frequency".
What is the value of 250 British pounds in 1914?
250 Pounds GBP in 1914 had the purchasing power of about £15,981.72 GBP today. NOTE - This historical conversion is the result of many calculations and considerations for which I cannot take credit. The resulting answer should only be regarded as an approximation.
Where can you find brake backing plates for 1978 ford F 250 ford pickup?
Hemmings Motor news? E-Bay? Salvage yard?
What is the name of the earth when all countries were connected and were not separated by seas?
About 250 million years ago, tectonic plates formed a supercontinent called Pangea
How do you convert 250 grams to cup?
250 grams is used as an average figure for 1 cup.
