1.0 mL 1.0 mL 1.0 mL 1.0 mL 1.0 mL 9.0 mL 9.0 mL 9.0 mL 9.0 mL 9.0 mL 1:10 1:100 1:1000 1:10,000 1:100,000 0.1 mL 0.1 mL 0.1 mL 0.1 mL 0.1 mL Too numerous Too numerous 389 colonies 50 colonies 2 colonies If you do a series of 3 1:10 dilutions, you have diluted the original culture to: 1:10 1:10,000 1:100,000 1:100 1:1000
Added by Kyle H.
Close
Step 1
After the second 1:10 dilution, the dilution factor is $(\frac{1}{10})^2$. After the third 1:10 dilution, the dilution factor is $(\frac{1}{10})^3$. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 101 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A student plates 100 µl (0.1 ml) of a serial dilution of bacterial culture and counts: 310 colonies on the 10^-5 dilution plate, 35 colonies on the 10^-6 dilution plate, and 21 colonies on the 10^-7 dilution plate. Which of the following calculations will correctly determine the concentration of the original culture? 310 colonies / (0.1 ml x 10^-5), 310 colonies / (0.1 ml x 10^-4), 35 colonies / (0.1 ml x 10^-5), 21 colonies / (0.1 ml x 10^-6), or 35 colonies / (0.1 ml x 10^-6).
Jenny W.
You do a series of dilutions as shown below, and you plate 1.0 ml of each dilution. Given the information below, fill in the number of colonies you would expect on each of the plates. Undiluted original sample 9 ml H2O Number of colonies on each plate
Given the dilution series outlined below: If plate H has 250 colonies, a. How many bacteria/mL are in each tube (A-E)? b. How many bacteria/mL are in the original culture? c. How many colonies would you expect to see on plate F and on plate G? d. Rework question 3, if now there are 30 colonies on plate H.
Madhur L.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD