Question

True OR False

1. H2o2 released from the bacteria (in alfa hemolysis) to lysis the hemoglobin in the Rbs and change it into meta hemoglobin

2. Hemocytometer is a specialized slide can be used to make a direct count of the cells in a sample

3. In disc diffusion Method We can be able to determine the Antibiotic dose

4. In Levin EMB agar the dye uses is Methylene blue dye and eosin only

5. E.coli digest lactose completely and net results is Co2  

6. The color of phenol red at lactose broth will be yellow at acidic PH

7.The more cells in a solution the higher its absorbance

8. All Coliform Bacteria produce the enzyme B-galactosidase

Answer 1

1.true

H2O2 produced by ba teria oxidizing hemiglobin into green methmoglobin

2.True

3.true

4.true

5.true

6.true

Phenol red turns yellow at acidic pH and fuschia at vasic pH

7.true

Concentration and absorbance are directly oroportional

8.true