Useful and Harmful Microbes

Which out of these is not a bacillus type bacteria.

• Rhizobium

• Lactobacillus

• Yeast

• Clostridium

Stain used for Rhizobium bacteria ?

• Methylene blue

• Safranin

What happens to the pH of milk due to fermentation?

• Increases

• Decreases

• Remains the same

Ethanol is not produced from fermentation of molasses by yeast.

• True

• False

Which of these is not a narrow spectrum antibiotic

• Erythromycin

• Gentamycin

• Ampicillin

• Penicillin