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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.
COMMO N EYE DEFECTS - 1 . Glaucoma - Pressure of aquous humour is increased, retina is degenerated. 2 . Presbyopia - Due to non etastic cilliary muscles,
Chemical bonding : The present matter of earth contains atoms bound in groups of two or more called molecules. Their binding capacity is called chemical reactivity; It depends upo
Name the four organisms which are currently in danger of extinction because of human activities?
Treatment of diarrhea Loperamide (Imodium, and others), an over-the-counter synthetic opioid (4-mg loading dose, then 2 mg orally after each loose stool to a maximum of 16 mg/d
Define Type of Instruments used in Spectral Techniques? A wide range of instruments are available, possessing a combination of features but there is no rigid classification of
skin derivates
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What is a pipette and how is it used? There are lots of types of pipettes (or pipette), but most are basically a fancier version of a medicine dropper or eye dropper. They are
The signals for parturition originate from: 1. placenta only 2. placenta as well as fully developed foetus 3. oxytocin released from maternal pituitary 4. fully develop
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