Determine the concentration of bacteria

Assignment Help Biology
Reference no: EM13118347

A water sample was analyzed to determine the concentration of bacteria in it. It was diluted as follows: 1ml of sample placed in 9ml of sterile water (tube A) from this solution, from that another 1ml was placed in 9ml of sterile water (tube B) and from that 1ml was placed in another 9ml of sterile water (tube C). Spread plates were then made by taking 1.0ml and 0.1ml from the last two tubes. The places were incubated and the results are tube C having 260 CFU from the 0.1 ml volume transfered. Determine the concentration of bacteria.

Reference no: EM13118347

Questions Cloud

Compute the ratio of the time he is above ymax moving up : To explain why he seems to hang in the air, compute the ratio of the time he is above ymax/2 moving up to the time it takes him to go from the floor to that height. You may ignore air resistance.
Define probability definition of continuity : Probability Definition of Continuity. Suppose that f_x is the probability density function (PDF) of a continuous random variable X. Also suppose that f_x is continuous on (a, b)
Why the organism takes on a crusty appearance : Photosynthetic, multicellular eukaryote that is anchored to the rocks surrounding the coastline of crystal lake , but has no roots. Low growing and non-motile, this organism relies on the tidal rise and fall of crystal lake for water and nutrient ..
Compute the number of calenders that should be ordered : Compute the number of calenders that should be ordered. The J&B Card Shop sells calendars depicting a different Colonial scene each month. The once-a-year order for each year's calendar arrives in September.
Determine the concentration of bacteria : A water sample was analyzed to determine the concentration of bacteria in it. It was diluted as follows: 1ml of sample placed in 9ml of sterile water (tube A) from this solution, from that another 1ml was placed in 9ml of sterile water (tube B) an..
Quadratic equation for rectangular garden : A farmer decides to enclose a rectangular garden, using the side of a barn as one side of the rectangle. What is the maximum area that the farmer can enclose with 100ft of fence? What should the dimensions of the garden be to give this area?
Illustrate what average force was exerted on the ball : After falling from rest from a height of 28 m, a 0.46 kg ball rebounds upward, reaching a height of 18 m. If the contact between ball and ground lasted 1.7 ms, illustrate what average force was exerted on the ball?
What osmolarity would you need to achieve in her body : A 20-year-old female presents to your emergency service with severe head trauma from a fall. An MRI reveals swelling of her brain, but no sign of hemorrhage.
Creating quadratic equation : How do you know if a quadratic equation will have one, two, or no solution? What is the role played by the discriminant? How do you find a quadratic equation

Reviews

Write a Review

Biology Questions & Answers

  Explain the nursing care and patient teaching

Explain the nursing care and patient teaching for the patient with a postpartum infection? What will the WBC rise to in case of a postpartum infection?

  Determine one consistent base composition assignment

In a mixed copolymer experiment using polynucleotide phosphorylase, 3/4g:1/4c was used to form synthetic message. the aminoacid was used to form synthetic message.

  Which nucleotide has been added and which deleted

What sequence of nucleotide pairs in a Drosophila gene would encode the amino acid sequence met-trp-phe-trp-met (reading from the amino terminus to the carboxyl terminus).

  What has to happen over time

In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population.

  Why genomes eukaryotes needs multiple origins of replication

Explain why do genomes of eukaryotes need to have multiple origins of replication, whereas bacterial genomes have only a single origin?

  Describe at least two mechanisms

Max's regular exercise regimen has reduced his high blood pressure, allowing him to achieve normal blood pressure on a single antihypertensive medication.

  Use liposomes in an attempt to deliver drugs

Suppose you were planning to use liposomes in an attempt to deliver drugs to a particular type of cell in the body, for example, a fat or muscle cell. Is there any way you might be able to construct the liposome to increase its target specificity?

  Dna microarray analysis

DNA microarray analysis of patterns of mRNA abundance in different human cell types shows that the level of expression of almost every active gene is different.

  Find the amount of energy a mammal

find the amount of energy a mammal.

  What is this resemblance an instance of

Your assignment, if you want to accept this, is to cross two of the F1 offspring and complete Punnett square for this cross and then write the resulting genotype and phenotypes. This must be 100 percent completely done for any extra credit. Your cros..

  Posibility of virolysn

Create a paper about the posibility of virolysn being used to treat Staph infection, but I do not really understand virolysin in its essence.

  Blood level of estrogen and progesterone

Birth control pills maintain a high blood level of estrogen and progesterone. Determine what is happening in the ovary when the blood level of estrogen is high?

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