Define disadvantages of direct microscopic count, Biology

Assignment Help:

Define Disadvantages of Direct Microscopic Count?

1. Small cells are difficult to see under the microscope and may be missed.

2. It gives total count, i.e., both live and dead cells as it is difficult to distinguish between the two.

3.High concentration of microbes, i.e., about 10 million bacteria/ml is required as very small volume of microbes is sampled.The method is not sensitive to populations of fewer than 1 million.

4. Motile cells must be immobilized before counting.

5. Phase contrast microscope is needed for unstained cells.


Related Discussions:- Define disadvantages of direct microscopic count

Define the functionality of cellulose, Functionality of cellulose Cellu...

Functionality of cellulose Cellulose has many uses as an anticaking agent, emulsifier, stabilizer, dispersing agent, thickener and gelling agent, but these are generally subsid

Explain tertiary butylhydroquinone, Tertiary Butylhydroquinone (TBHQ) T...

Tertiary Butylhydroquinone (TBHQ) TBHQ is moderately soluble in oil and slightly soluble in water. In many cases, TBHQ is more effective than any other antioxidant in providing

Other complications in prosthetic valves, Other Complications :  Bioprosth...

Other Complications :  Bioprosthetic valves have a tendency for degeneration, calcification or cusp perforation. Current models have overcome many of these problems. Calcification

Butter, Ask question #Minimum 100 words role of micro organisms in preparat...

Ask question #Minimum 100 words role of micro organisms in preparation of butter accepted#

What is phytates, Q. What is Phytates? Phytates are widely distributed...

Q. What is Phytates? Phytates are widely distributed in seeds of vegetables, fruits and grains. Unrefined cereals and millets are the richest sources of phytates. Refined or

Major renal processes that combined produce urine, Q. What are the three ma...

Q. What are the three major renal processes that combined produce urine? Urine is made by the occurrence of three processes in the nephron that are tubular resorption, glomerul

Assigment, describe food procurement and digestion in ciliates.

describe food procurement and digestion in ciliates.

Energy demand for vigorous or vigorously active lifestyles, Determine Energ...

Determine Energy demand for Vigorous or vigorously active lifestyles? These people engage regularly in strenuous work or in strenuous leisure activities for several hours. Exam

Define the process of digestion of proteins, Define the Process of Digestio...

Define the Process of Digestion of Proteins? The daily protein intake (of about 50-100 g) and the protein of enzymes, sloughed (bled or drop off) epithelial cells and mucins, w

taxonomy, what are the phase of alpha taxonomy

what are the phase of alpha taxonomy?

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