Q. What is the main benefit of using microbial processes in wastewater treatment?
-
A.
Increase in pathogens
-
B.
Reduction of organic matter
-
C.
Increase in nutrients
-
D.
Production of methane
Solution
Microbial processes in wastewater treatment help reduce organic matter, making water safer for discharge.
Correct Answer:
B
— Reduction of organic matter
Learn More →
Q. What is the primary function of yeast in brewing beer?
-
A.
Flavoring
-
B.
Fermentation
-
C.
Clarification
-
D.
Preservation
Solution
Yeast is responsible for fermentation, converting sugars into alcohol and carbon dioxide in beer production.
Correct Answer:
B
— Fermentation
Learn More →
Q. What is the primary microbial process used in the production of yogurt?
-
A.
Fermentation
-
B.
Photosynthesis
-
C.
Respiration
-
D.
Decomposition
Solution
Fermentation is the process used by bacteria like Lactobacillus to convert lactose into lactic acid, producing yogurt.
Correct Answer:
A
— Fermentation
Learn More →
Q. What is the primary product of the microbial fermentation of sugars in the production of bread?
-
A.
Ethanol
-
B.
Carbon dioxide
-
C.
Lactic acid
-
D.
Acetic acid
Solution
Carbon dioxide is produced during the fermentation of sugars by yeast, causing bread to rise.
Correct Answer:
B
— Carbon dioxide
Learn More →
Q. What is the role of Rhizobium in agriculture?
-
A.
Pathogen
-
B.
Nitrogen fixation
-
C.
Decomposition
-
D.
Fermentation
Solution
Rhizobium bacteria form symbiotic relationships with legumes, fixing atmospheric nitrogen into a usable form for plants.
Correct Answer:
B
— Nitrogen fixation
Learn More →
Q. Which microorganism is commonly used in the production of penicillin?
-
A.
Bacillus subtilis
-
B.
Penicillium chrysogenum
-
C.
Escherichia coli
-
D.
Saccharomyces cerevisiae
Solution
Penicillium chrysogenum is the mold used to produce penicillin, an important antibiotic.
Correct Answer:
B
— Penicillium chrysogenum
Learn More →
Q. Which microorganism is primarily responsible for the fermentation of soybeans to produce soy sauce?
-
A.
Aspergillus oryzae
-
B.
Lactobacillus
-
C.
Saccharomyces cerevisiae
-
D.
Bacillus subtilis
Solution
Aspergillus oryzae is used in the fermentation of soybeans to produce soy sauce.
Correct Answer:
A
— Aspergillus oryzae
Learn More →
Q. Which microorganism is used in the production of antibiotics other than penicillin?
-
A.
Streptomyces
-
B.
Bacillus
-
C.
Lactobacillus
-
D.
Clostridium
Solution
Streptomyces is a genus of bacteria known for producing a variety of antibiotics, including streptomycin.
Correct Answer:
A
— Streptomyces
Learn More →
Q. Which microorganism is utilized in the production of ethanol through fermentation?
-
A.
Lactobacillus
-
B.
Saccharomyces cerevisiae
-
C.
Clostridium acetobutylicum
-
D.
Aspergillus niger
Solution
Saccharomyces cerevisiae, or baker's yeast, is commonly used to ferment sugars into ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
Learn More →
Q. Which process do microbes use to produce vinegar?
-
A.
Anaerobic respiration
-
B.
Aerobic respiration
-
C.
Fermentation
-
D.
Photosynthesis
Solution
Aerobic respiration is used by acetic acid bacteria to convert ethanol into acetic acid, producing vinegar.
Correct Answer:
B
— Aerobic respiration
Learn More →
Showing 1 to 10 of 10 (1 Pages)
