1. What is a differential stai

1. What is a differential stain?

2. Give three reasons for using heat as a fixative in Gramstaining.

3. What is the use of the stage and ocular micrometer inmicrometry.


Ans 1: Differential Staining is a staining process which usesmore than one chemical stain. Using multiple stains can betterdifferentiate between different microorganisms orstructures/cellular components of a single organism. Differentialstaining is used to detect abnormalities in the proportion ofdifferent white blood cells in the blood. The process or resultsare called a WBC differential. This test is useful because manydiseases alter the proportion of certain white blood cells.

2: Reasons for using heat as a fixative in Gram Stainingare:

a) Heat fixing denatures bacterial enzymes, preventing them fromdigesting cell parts, which causes the cell to break, a processcalled autolysis.

b) Heat fixing kills the bacteria in the smear, firmly adheresthe smear to the slide.  

c) Heat fixing allows the sample to more readily take upstains.

3: An ocular micrometer is a glass disk that fits in amicroscope eyepiece that has a ruled scale, which is used tomeasure the size of magnified objects. The physical length of themarks on the scale depends on the degree of magnification.

A Stage micrometers are used on the stage of the microscope andprovide a simple and reliable means of accurately calibratingeyepiece graticules.

"Our Prices Start at $11.99. As Our First Client, Use Coupon Code GET15 to claim 15% Discount This Month!!"

Calculate your order
Pages (275 words)
Standard price: $0.00
Client Reviews
Our Guarantees
100% Confidentiality
Information about customers is confidential and never disclosed to third parties.
Original Writing
We complete all papers from scratch. You can get a plagiarism report.
Timely Delivery
No missed deadlines – 97% of assignments are completed in time.
Money Back
If you're confident that a writer didn't follow your order details, ask for a refund.

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
Power up Your Academic Success with the
Team of Professionals. We’ve Got Your Back.
Power up Your Study Success with Experts We’ve Got Your Back.