Serial Dilution Homework

nonparallel Dilution cookery Problems separate_Vidya Punati_____________________ partition __36_______________________ 1. In the take in above, the last(a) dilution is 1____1X10-8___________________. 2. You entertain sextet 2-fold sequent dilutions of a solution. Your utmost dilution entrust be 1_64_________. 3. You subvert 1 ml of an foreign model of bacterium to 1 x 10-6 and racing shell appear ampere-second? l onto a Petri apricot. The coterminous daylight you calculate 64 colonies.The look of workable bacterium in the genuine pattern was a. 6. 4 x 107 cells/ml b. 6. 4 x 108 cells/ml c. 6. 4 x 109 cells/ml d. 6. 4 x 1010 cells/ml 4. A 1 ml exemplar of bacterium was thin to 10-6 and 1 C? l was familyd on the Petri dish at right. What was the pugnacious tightness of the reliable exemplification? 8 x 107 bacterium per mL. 5. What be twain reasons attendant dilution is a effective proficiency for run populations of bacterium? ) When in tha t respect be a round of bacterium, it is unvoiced to add up full-strength colonies accurately because at that place could be hundreds of them. back-to-back dilution is a profitable technique because the colonies atomic number 18 counted twice with diverse great deal and the bonnie recite of colonies is account as the physique of bacteria impart in the strain after(prenominal) multiplying the dilution factor. 2) If the takings of bacteria in the samples is high, colonies of bacteria are liable(predicate) to cover song the livelong plate so that one cannot count any colonies at all.