QC Chemist and Microbiologist Interview Questions and Answers

Fermentation is a metabolic process that converts sugar to acids, gases, or alcohol.

• Fermentation is an anaerobic process

• It is used in the production of alcoholic beverages like beer and wine

• It is also used in the production of bread, yogurt, and cheese

• Fermentation can be carried out by microorganisms like yeast and bacteria

• It is an important process in the food and beverage industry

Gram positive and gram negative are two types of bacteria distinguished by their cell wall structure.

• Gram positive bacteria have a thick peptidoglycan layer in their cell wall, which retains the crystal violet stain in the Gram staining process.

• Gram negative bacteria have a thinner peptidoglycan layer and an outer membrane containing lipopolysaccharides, which makes them more resistant to antibiotics.

• Examples of gram positive bacteria include Staphylococcus aureus and Strepto...read more

Acid base refers to the concept of acidity and alkalinity of a substance.

• Acid is a substance that donates hydrogen ions (H+) while base is a substance that accepts hydrogen ions.

• The pH scale is used to measure the acidity or alkalinity of a substance, with 7 being neutral, below 7 being acidic, and above 7 being alkaline.

• Acid-base reactions are important in many chemical and biological processes, such as digestion and blood pH regulation.

• Examples of acids include hydrochloric...read more