Define disadvantages of using the plate counts method, Biology

Assignment Help:

Define Disadvantages of Using the Plate Counts Method?

1. It takes time, usually 24 hours or more is required to obtain visible colonies.

2. Microbial count obtained depends upon the culture media used for plate counts.

3. It is not a very useful method for actinomycetes and moulds because in plate counts, it is the asexual spores, which are counted.

4. More glassware is needed.

5. Errors in result may arise due to errors in dilution or plating.

6. Results are expressed as counts forming unit per ml (CFU/ml) rather than as number of microbes.  It is so because many microbes are present in chains and clusters and it is difficult to be absolutely certain that each colony has arisen from a single cell.  A colony might be produced from a short segment of a chain or from a bacterial clump.


Related Discussions:- Define disadvantages of using the plate counts method

Why the l enantionmer is more dominant, In the Miller-Urey experiment, amin...

In the Miller-Urey experiment, amino acids of bothe the L and D enantionmers. Why is it that the L enantionmer is more dominant in living things?

Mechanics of locomotion, Mechanics of Locomotion Among annelids, poly...

Mechanics of Locomotion Among annelids, polychaetes, hence more primitive than the other two groups, show a more complex mode of locomotion. Necessarily, the locomotion in po

Nutrition - different feeding habits, Different Feeding Habits Feeding ...

Different Feeding Habits Feeding habits of animals depend on the nature of the food consumed. Herbivorous : When plants are eaten. Examples - Horse, cow, rabbit, apes.

Excreation, What is the excreatory organ in agama lizard

What is the excreatory organ in agama lizard

What are the endocrine functions of the placenta, Q. What are the endocrine...

Q. What are the endocrine functions of the placenta? The placenta has endocrine function since it secretes the hormones estrogen and progesterone that maintain the endometrium

Swine fever, S w i n e fever It is also known as hog cholera and re...

S w i n e fever It is also known as hog cholera and results in high fever and prostration. E t iology : Pestivirus belonging to family Togaviridae is responsi

Cellular type - endosperm, Cellular Type - Endosperm In this type, as...

Cellular Type - Endosperm In this type, as the name indicates, the division of the primary endosperm nucleus is immediately followed by the laying down of a wall, which is us

Theory of pangenesis, THEO R Y OF PANGENESIS - To make up the weaknes...

THEO R Y OF PANGENESIS - To make up the weakness of inheritance Darwin in this theory assumed the existence of Pangenes (gem mules) as small units (representives) of each par

Define nitrogen requirements in pregnancy and lactation, Define Nitrogen re...

Define Nitrogen requirements in Pregnancy and Lactation? The nitrogen accretion in the pregnant woman (assuming that the foetus weighs 3.3 kg at term), estimated by the Committ

Determine the use of water soluble vitamin A, Water soluble Vitamin A  ...

Water soluble Vitamin A  Water soluble vitamin A is a yellowish green, slightly turbid, fluorescent liquid of faint characteristic odour. The taste is at first faintly sweet an

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd