Which of the following techniques is the best way to directly count viable cells?ANSWERMeasuring the turbidity of a solutionPlate countsMeasuring the consumption of oxygenDirect microscopic counting of only motile cells

Cell numbers can be counted directly by all of the following except A) microscope counting chamber. B) Coulter counter. C) flow cytometer. D) turbidity

In the viable plate count method, a measured sample of a culture is evenly spread across an agar surface and incubated. Each _____ represents one _____ from the sample. A. cell, cell B. cell, colony C. colony, cell D. species, colony E. generation, cell Question 29 options:

Which of these methods can be used to obtain a total cell estimate? Group of answer choices Most probably number estimations Any of the methods listed Plate counts of serial dilutions Optical density measurement

Turbidity estimates the number of viable cells in a clear liquid media or broth.

An honours student needs to count the number of cells they have in a tube. They take an aliquot of the cells and dilute them 1:50 before loading 10 uL into a haemocytometer to perform a cell count. They count 4 quadrants and obtain the following counts for each quadrant: 12, 5, 17, 9.Which of the following statements is the most correct?Group of answer choicesThey should take the cells from the original flask, perform a new 1:5 dilution and repeat the cell countThe cells in the original flask are at a concentration of 5.4 x10^6 cells per mLThe cells in the original flask are at a concentration of 1.08 x 10^5 cells per mLThey should take the cells from the original flask, perform a new 1:100 dilution and repeat the cell count