BIOD 171 MICROBIOLOGY LAB 4
COMPREHENSIVE EXAM SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Reduce bacteria growth. Answer: Why are the bacterial samples
stored in the fridge?
◉ 500-1000. Answer: How many microbes are on the wire loop after
you have picked it up from the workbench?
◉ To avoid contamination. Answer: Why is this important to do before
working with the chicken farm sample?
◉ Logarithm of bacteria on the wire loop. Answer: Let's remind
ourselves, what does the graph on the screen represent?
◉ Salmonella and E. Coli. Answer: What are the black and red antibiotic
resistant species growing on the agar plate?
◉ To reduce the number of bacteria on the wire loop. Answer: Why do
you sterilize the wire loop between each quarter of the plate?
COMPREHENSIVE EXAM SCRIPT 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Reduce bacteria growth. Answer: Why are the bacterial samples
stored in the fridge?
◉ 500-1000. Answer: How many microbes are on the wire loop after
you have picked it up from the workbench?
◉ To avoid contamination. Answer: Why is this important to do before
working with the chicken farm sample?
◉ Logarithm of bacteria on the wire loop. Answer: Let's remind
ourselves, what does the graph on the screen represent?
◉ Salmonella and E. Coli. Answer: What are the black and red antibiotic
resistant species growing on the agar plate?
◉ To reduce the number of bacteria on the wire loop. Answer: Why do
you sterilize the wire loop between each quarter of the plate?
