0
Many aspects of bacterial colonies may be measured for example colony size or appearance can be useful. The measurement which is perhaps the most useful however, is the colony forming units per ml (or cfu) which indicates how many bacterial cells are present to form colonies on the medium. This is a relatively simple calculation which is done by initially counting the number of colonies present on the medium. this number is then multiplied by the inverse of the dilution used. For example, if the dilution of the bacterial broth was 10-2 and the number of colonies on the medium was 60, then the calculation would be 60 x 102. This result is then divided by the volume of sample used in ml and will give you the number of colony forming units per ml present on the medium.
Ben McD
Add your answer:
Earn +20 pts
What is a hectoliter?
A hectoliter is a unit of measurement. This particular unit of measurement is used for the volume of liquids on a large scale.
What is the ratio called that is used to convert a measurement in one unit to an equal measurement in a new unit?
A conversion factor.
Is a fixed amount used as a standard of measurement?
Unit
What is the metric unit gram used for?
It is a measurement of mass.
What unit of measurement is used with beakers?
Milliliters (mL).
What unit of measurement is used measure weight?
what is the measurement is used to measure fluid
What is a hectoliter?
A hectoliter is a unit of measurement. This particular unit of measurement is used for the volume of liquids on a large scale.
What is the ratio called that is used to convert a measurement in one unit to an equal measurement in a new unit?
A conversion factor.
What unit of measurement is used for relative humidity?
%
What is the unit of measurement used for lengthh?
killometers
What are two parts of a measurement?
A number and a unit make up a measurement.
Is a kilogram used as a measurement for weight?
yes, it is the unit for metric unit for weight.
What is the smaller unit of measure used the more precise the measurement what does this mean?
The smaller unit of measure used is called a precision unit. Using a smaller unit allows for more detailed measurements, leading to greater accuracy in the final measurement. Essentially, the more precise the measurement, the smaller the unit used to measure it.
Need of SI unit?
SI units are used fundamentally.SI unit is used by everyone. Hence, it is a standard unit for measurement.
Is decimeters a form of measurement for people?
Not really. A decimetre is not a measurement unit which is used much.
What is the unit of measurement of height in the US compared to the UK?
The unit of measurement of height in the US is based on the English units. The English unit generally used meter and kilograms while in the UK people generally used centimeters when referring to height measurement.
What unit of measurement be used for the length of a road?
Kilometers
