Which of the following is the best technique for counting only viable cells? Answer choices a. direct microscopic count b. spread plate c. spectrophotometer d. chemostat e. dry weight measurements
Added by Margaret D.
Step 1
Step 1: The question asks for the best technique for counting only viable cells, which are cells that have grown and multiplied in a nutrient media. Show more…
Show all steps
Your feedback will help us improve your experience
Nicholas Mogoi and 76 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
Which of the following methods would be best for measuring the growth of a bacterial species that tends to form large clumps or aggregates which rapidly sediment to the bottom of a liquid culture? A) viable plate count method B) membrane filtration method C) direct microscopic count method D) dry weight method E) turbidity readings
Sri K.
Which of the following methods would be used to measure the concentration of bacterial contamination in processed peanut butter? a. turbidity measurement b. total plate count c. dry weight measurement d. direct counting of bacteria on a calibrated slide under the microscope
Shahina -.
If the concentration of $E .$ coli in a broth is between $10^{4}$ and $10^{6}$ cells per $\mathrm{mL},$ the best way determine the precise number of living cells in the sample, would be to a) use a counting chamber. b) plate out an appropriate dilution of the sample on nutrient agar. c) determine cell number by using a spectrophotometer. d) Any of these three methods would be satisfactory. e) None of these three methods would be satisfactory.
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