CORRECT WELL DETAILED ANSWERS|LATEST
UPDATE!!!!2025/2026|GUARANTEED
PASS|GRADED A+
coliform bacteria - ANSWER gram negative bacillus found in feces. we use it for water
quality test to see if it is fecal contaminated since it is easier to culture and detect.
X-Gal - ANSWER cleaved by Enzyme beta galactosidase detects coliform agar turns a
blue or green color
MUG - ANSWER cleaved by enzyme beta glucuronidase detects E-coli turns a violet
pink
Rapid E-coli 2 agar - ANSWER selective medium for gram negative bacteria for
detection of coliform(green-blue) and E coli(violet pink)
Eosin methlene blue EMB - ANSWER E coli= metallic green
coliform= agar turn pink-dark purple
no coliform= red orange agar
eosin y dye - ANSWER in EMB which is a indicator that reacts with acid produced by
lactose fermenters.
methylene blue dye - ANSWER in EMB inhibits gram positive bacterial growth
Hektoen Enteric agar (HEA) - ANSWER detects presence of
coliform= yellow-pink-orange
ferrous sulfide= black
1
UPDATE!!!!2025/2026|GUARANTEED
PASS|GRADED A+
coliform bacteria - ANSWER gram negative bacillus found in feces. we use it for water
quality test to see if it is fecal contaminated since it is easier to culture and detect.
X-Gal - ANSWER cleaved by Enzyme beta galactosidase detects coliform agar turns a
blue or green color
MUG - ANSWER cleaved by enzyme beta glucuronidase detects E-coli turns a violet
pink
Rapid E-coli 2 agar - ANSWER selective medium for gram negative bacteria for
detection of coliform(green-blue) and E coli(violet pink)
Eosin methlene blue EMB - ANSWER E coli= metallic green
coliform= agar turn pink-dark purple
no coliform= red orange agar
eosin y dye - ANSWER in EMB which is a indicator that reacts with acid produced by
lactose fermenters.
methylene blue dye - ANSWER in EMB inhibits gram positive bacterial growth
Hektoen Enteric agar (HEA) - ANSWER detects presence of
coliform= yellow-pink-orange
ferrous sulfide= black
1
