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Explain the Most Probable Number (MPN) Techniques?
Different procedures and media may be used depending on the food tested and the information sought. Media which can be used include Brilliant green lactose bile broth, Eosin methylene blue agar, lauryl sulfate tryptose broth, violet red bile agar or lactose broth etc. Presumptive count of coliforms in food is determined using Lauryl Sulphate Tryptose (LST) broth and Violet Red Bile (VRB) agar.
Former helps in detection of microbes that produces gas from lactose (gas in Durham tube) while acid production is detected by VRB agar (purple red colonies surrounded with a precipitate). Additional testing is done by inoculating from the positive presumptive tests into Brilliant Green Lactose Bile (BGLB) broth for confirmation. Gas in Durham tube confirms the test. Samples from the positive confirmed test are then streaked on to Eosin Methylene Blue (EMB) agar for completing the test. Lactose fermenters produces the black or dark center colonies (Positive result). Black colonies with green sheen are probably of E. coli.
What is the phenomenon known as "red tide"? Which ambiental harms can it cause? Red tide is a phenomenon that happens when dinoflagellates (algae from the pyrrophyte group) pro
Describe Briefly about the Type 1 Diabetes? In people with normal weight, Type1 Diabetes is not a major cause of death but it is an important contributor to morbidity and morta
Are chaetopterus species coelomate?
Question 1: Show applications of Bioinformatics in pharmacogenomics. Expand FASTA and BLAST. List out any 10 applications of Bioinformatics in pharmacogenomics Expand
State the Disorders of sleep The need for sleep varies considerably from one person to another, as well as in the same person at different stages of life. We have all been told
Approach grafting In this method both scion and stock remain rooted. A small slice is cut off from the stem of scion and stock. Scion is bent towards the stock. The two c
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Explain the Nutrition of Fungi? Fungi grow in moist environment and are chemoorganoheterotrophs. What do we mean by chemoorganoheterotrophs? The term chemotroph describes organ
Characteristics of Thick Gingiva Relatively flat soft tissue and bony architecture Dense fibrotic soft tissue Relatively large amount of attached gingiva Thick und
what is fluid mosaic model
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