4. You have been given 6 new strains of Bacillus species recently isolated from a mining site. In order to compare the growth patterns of these strains, you set up a 24 hour growth experiment. The bacteria were grown at 37°C in a nutrient broth medium and samples were taken after 24 hours. Each sample was then serially diluted from 10.¹ to 104, and 100 μl aliquots from each plated onto nutrient agar plates for enumeration (using the spread plate method). The plates were incubated overnight and the colony counts recorded in the table below. Strain number B1 B2 B3 B4 B5 B6 10-¹ TMTC 935 TMTC TMTC 156 570 B1 B2 B3 B4 B5 10-² B6 TMTC 99 391 TMTC 21 67 Dilution 10-³ 786 25 48 670 4 12 10-4 220 Note: TMTC = Too Many To Count Complete the table below by calculating the number of CFU/ml for each of strains listed above Strain number CFU/ml 0 4 112 0 0

4. You have been given 6 new strains of Bacillus species recently isolated from a mining site. In order to compare the growth patterns of these strains, you set up a 24 hour growth experiment. The bacteria were grown at 37°C in a nutrient broth medium and samples were taken after 24 hours. Each sample was then serially diluted from 10.¹ to 104, and 100 μl aliquots from each plated onto nutrient agar plates for enumeration (using the spread plate method). The plates were incubated overnight and the colony counts recorded in the table below. Strain number B1 B2 B3 B4 B5 B6 10-¹ TMTC 935 TMTC TMTC 156 570 B1 B2 B3 B4 B5 10-² B6 TMTC 99 391 TMTC 21 67 Dilution 10-³ 786 25 48 670 4 12 10-4 220 Note: TMTC = Too Many To Count Complete the table below by calculating the number of CFU/ml for each of strains listed above Strain number CFU/ml 0 4 112 0 0

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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