Probiotics sample you received

Assignment Help Biology
Reference no: EM132079031

You received a probiotic sample supposed to contain 20 billion CFU of probiotics per serving. You make four (4) serial dilutions (dilution 1, dilution 2, dilution 3 and dilution 4) of the sample by pipetting 0.5 ml into 19.5 ml of medium during each dilution step. Then you pipette a 0.2 ml sample from dilution 3 and 4 onto the surface of a MRS agar plate. After 48 hours incubation time, you count 89 bacterial colonies on the plate with the dilution 4 sample. What was the "CFU" of the probiotics sample you received? Is the number in agreement with the stated CFU number?

Reference no: EM132079031

Questions Cloud

What effect does this have on antibody and cell-mediated : Human immunodeficiency virus (HIV) preferentially destroys CD4+ cells. Specifically, what effect does this have on antibody and cell-mediated immunity?
Primers to find biosynthetic gene clusters : What is the difference between using primers to find biosynthetic gene clusters and using primers to screen non-ribosomal peptide synthtases
Where could you find the information you need : What will you need to know to be prepared to control outbreaks? Where could you find the information you need?
Advantage of growing bacteria on petri plates in lab : 1. What criteria did you use to determine whether colonies are from the same or different bacteria?
Probiotics sample you received : You received a probiotic sample supposed to contain 20 billion CFU of probiotics per serving. You make four (4) serial dilutions (dilution 1, dilution 2,
Experiment on aseptic technique : Why is it important to use a control plate and stab tube when doing an experiment on aseptic technique?
Discuss the common fomites or transmission : Discuss the common fomites or transmission factors involved as well as the preventative measures the public can do to reduce or prevent MRSA infections.
What is the population density of the original sample : You have performed a serial dilution of an unknown sample and counted 73 CFU on a countable plate that was marked as a 10-4 dilution
Tissue and cell culture in vaccine development : Before the 1950s, why was it so difficult to grow viruses in labs?

Reviews

Write a Review

Biology Questions & Answers

  What is being transported into cell by this process

Which transport mechanism can be visualized as a relay race? What is being transported like a baton in a relay race? What is being transported into cell by this process? Explain the steps of this transport process from start to finish nothing what..

  Q you find out a mutant yeast strain that cannot grow while

q. you find out a mutant yeast strain that cannot grow while provided with pyruvate as its sole carbohydrate though it

  The chief demerit to a firm which decides to follow a

1 the chief disadvantage to a firm that decides to follow a product specialization strategy in selecting target markets

  Solve general physiology question

The secretory coil fills the lumen with a NaCl solution that is isotonic with the blood plasma. As this solution moves upward through the reabsorptive duct,

  Why would glomerular inflammation result in these substances

The presence of blood and protein in the urine can indicate the inflammation of the glomerulus. Why would glomerular inflammation result in these substances passing into filtrate and the urine?

  What characteristics are shared by the given toxins

What characteristics are shared by these toxins, and what characteristics of these toxins make these toxins vulnerable to toxicity of these specific systems?

  Structure of a phospholipid molecules

The structure of a phospholipid molecules admirably suits it to the function of

  Which tendon will probably highest elastic extensibility

Depicts samples from four cylindrical tendons and all are composed primarily of collagen. Each has been clamped at both ends and a machine is used to gradually pull the ends in opposite directions (arrows) until the material yields

  Write journal article on the biology of hiv

Write Journal Article on The Biology of HIV, the Path from HIV to AIDS

  Discuss why this kind of organization helps the cell carry

Cells are composed of compartments called organelles. Discuss why this kind of organization helps the cell carry out its diverse functions.

  Increase the occurrence of species extinction

How do human activities increase the occurrence of species extinction? one-two paragraph

  What is the best general explanation for how this occurs

Many infectious diseases are becoming difficult to treat because of bacterial resistance to antibiotics. Populations of bacteria can become resistant when they are exposed to an antibiotic. What is the best general explanation for how this occurs?

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