which process is most commonly used in bio-oxidation to recover gold from sulfide-containing ores.

• A) Biomining
• B) BIOX
• C) None
• D) Bioleaching

which is true about term Vaccine

• A) All of above
• B) The agent stimulates the body's immune system to recognize the agent as foreign, destroy it, and keep a record of it
• C) A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe
• D) Biological preparation that improves immunity to a particular disease.

Vaccine that contain a version of the living microbe which has been weakened in the lab so it can’t cause disease called as

• A) Live-attenuated vaccines
• B) Toxoid vaccines
• C) Inactivated vaccines
• D) Subunit vaccine

Cellulose can be digest by enzyme named ____________

• A) Amylase
• B) Lipase
• C) Proteinase
• D) Cellulase

Yeasts are the most widely used microbes in the food industry due to their ability to ferment sugars to --------- and ---------.

• A) Ethanol only
• B) Acetic acid and carbon dioxide
• C) Ethanol and carbon
• D) Ethanol and carbon-dioxide

On land, the decomposition of dead organic matter also called as ------------.

• A) Bioremiediation
• B) none
• C) Both of above
• D) Mineralization

Human gut serves two major functions

• A) nutrition and digestion
• B) nutrition and defense
• C) digestion and defense
• D) nutrition and respiration

The evolution of Microorganisms came into being on earth over a period of about?

• A) 1.2 to 1.5 billion
• B) 2 billion
• C) 3 billion
• D) 2 to 3 billion

Which one is categorized as the earliest microorganisms and very important even today.

• A) Ameoba
• B) Eubacteria
• C) Cyanobacteria
• D) Blue green algae

Personal care products such as soaps and hand sanitizers that contain antimicrobial chemicals are less effective at limiting bacteria than soaps without antimicrobial agents?

• A) False
• B) True
• C)
• D)

Statins produced by the yeast Monascus purpureus have been commercialized as

• A) Antidepressant
• B) Anticoagulant
• C) Pain killer
• D) Blood cholesterol lowering agent

Aeration is done to ensure the availability of ---------- for microbial growth. Sparger are used to achieve aeration.

• A) Carbon dioxide
• B) ozone
• C) Nitrogen
• D) Oxygen

During evolution of life which gas is not present on earth atmosphere?

• A) Carbon dioxide
• B) Nitrogen
• C) Sulfur
• D) Oxygen

During vaccine production Antigen is generated from______

• A) Fungi
• B) Bacteria
• C) Algae
• D) Plants

These antibiotics have an inhibitory effect on bacteria. Example: Erythromycin, Tetracycline, Chloramphenicol called as ?

• A) Narrow spectrum
• B) Bacteriostatic antibiotics
• C) Broad spectrum
• D) Bactericidal antibiotics

The genus Xanthomonas belongs to the γ subdivision of the Proteobacteria and consists exclusively of

• A) Plant fertilizer
• B) None
• C) plant pathogens
• D) Plant interaction

Antimicrobial pesticides help to rapid growth of human pathogenic microorganism?

• A) True
• B) False
• C)
• D)