As shown in this diagram, you perform a ten-fold serial dilution of a culture to determine the number of colony forming units (CFU) per mL it contains. You do a plate count with these growth results (no. of colonies for each dilution): 1:10 too many to count; 1:100 too many to count; 1:1,000 174; 1:10,000 23; 1:100,000 no growth. The number of CFU per mL in the original culture was: 1 ml 1 ml Original inoculum Dilutions 9 ml broth in each tube 1:10 1 ml 1:100 1 ml 1 ml 1 ml 1:1000 1 ml 1:10,000 1 ml 1 ml None of the other four answers (Correct answer not given) 1,000 230,000 174 174,000 1:100,000 1 ml

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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As shown in this diagram, you perform a ten-fold serial dilution of a culture to determine the number of colony forming units (CFU) per mL it contains. You do a plate count with
these growth results (no. of colonies for each dilution): 1:10 too many to count; 1:100 too many to count; 1:1,000 174; 1:10,000 23; 1:100,000 no growth. The number of CFU per
mL in the original culture was:
1 ml
1 ml
Original
inoculum
Dilutions
9 ml broth
in each tube
1:10
1 ml
174,000
1:100
1 ml
1 ml
1 ml
1:1000
1 ml
1:10,000
1 ml
None of the other four answers (Correct answer not given)
1,000
230,000
174
1 ml
1:100,000
1 ml
Transcribed Image Text:As shown in this diagram, you perform a ten-fold serial dilution of a culture to determine the number of colony forming units (CFU) per mL it contains. You do a plate count with these growth results (no. of colonies for each dilution): 1:10 too many to count; 1:100 too many to count; 1:1,000 174; 1:10,000 23; 1:100,000 no growth. The number of CFU per mL in the original culture was: 1 ml 1 ml Original inoculum Dilutions 9 ml broth in each tube 1:10 1 ml 174,000 1:100 1 ml 1 ml 1 ml 1:1000 1 ml 1:10,000 1 ml None of the other four answers (Correct answer not given) 1,000 230,000 174 1 ml 1:100,000 1 ml
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