Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

The depth of the hemocytometer sample box is 0.1mm for all problems.

Please show all calculations.

1. You count 74 cfu on a pour plate. The plate was prepared by spreading 0.2 ml of a 1:10,000 dilution of the original sample. What is the density of the original culture (in cells/ml)?

2. You have a culture of yeast that is at a density of 4.76 x 10^6 cells/ml. You dilute the sample 1:100, and then again 1:100, and finally you dilute the sample an additional 1:3. You add 0.1 ml of the final dilution to a spread plate. Assuming that most of the cells in the original culture were living, how many colony forming units do you expect to count on your plate the next day?

3. What is the average size of a yeast cell?

Biology, Academics

  • Category:- Biology
  • Reference No.:- M925708

Have any Question? 


Related Questions in Biology

Which cultures would be more likely to focus on external

Which cultures would be more likely to focus on external controls? Which cultures would consider direct controls to be more important than indirect controls? Be specific and explain your answer.

Biol 101 study guide quizquiz preparation tasks11 your

BIOL 101 STUDY GUIDE: QUIZ Quiz Preparation Tasks: 11 Your Answers and Notes Elegant Responsiveness A hormone that controls a person's appetite might bind to ____________ proteins on membranes in the brain. What is the t ...

Questionat least two of the primary factors thought to be

Question: At least two of the primary factors thought to be involved in the observed changes in atmospheric CO 2 levels since the Industrial Revolution Part: How the Carbon Cycle Relates to Global

Assignment150 word minimum for question 1 only any

Assignment 150 word minimum for question #1 ONLY. Any materials used in answering the questions must be put in your own words and the reference(s) must be properly cited. 1. According to some scientists, in developing co ...

What is convergent evolution use evidence from the trees to

What is convergent evolution? use evidence from the trees to explain how the Anolis lizards are an example of this concept.

Knowing that acid rain has a ph of 2 - 3 would you conclude

Knowing that acid rain has a pH of 2 - 3 would you conclude that crop species with a narrow soil pH range are in trouble? Explain why, or why not, using scientific reasoning. Is acid rain a problem for plant species and ...

Reproductive systemdefine primary sex organs secondary sex

Reproductive System Define primary sex organs, secondary sex organs, and secondary sex characteristics Describe the accessory glands and other secondary sex organs of the male/female, and state their functions Explain th ...

Gene technologygene technology carries with it social and

Gene Technology Gene technology carries with it social and ethical implications-many of which engender personal views and discussion. Select one (1) of the following biotechnology topics to write about:  Genetically modi ...

Bacterial cells have only one dna molecule which is double

Bacterial cells have only one DNA molecule, which is double stranded and is replicated in essentially the same fashion as in eukaryotes. Imagine that, following the techniques of other scientists studying DNA, you create ...

The protein produced by huntingtons disease huntingtin

The protein produced by Huntington's disease (huntingtin) interferes with general transcription factor (called CBP) and prevents it from binding the promoter. CBP activates genes involved in cell survival. i) Which step ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen