Microbes in Human Welfare Chapter-Wise Test 15

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which bioactive molecule is used in the treatment of heart attack patients to dissolve blood clots?

Statins
Cyclosporin A
Streptokinase
Penicillin
3

Streptokinase, produced by Streptococcus bacteria, is used as a clot-busting drug in heart patients.

Which of the following microbes is responsible for the large holes in Swiss cheese?

Lactobacillus
Propionibacterium shermanii
Saccharomyces cerevisiae
Clostridium butylicum
2

Propionibacterium shermanii produces carbon dioxide, forming large holes in Swiss cheese.

Which of the following microbes is involved in nitrogen fixation?

Rhizobium
Pseudomonas
Saccharomyces
Penicillium
1

Rhizobium is a symbiotic nitrogen-fixing bacterium found in root nodules of leguminous plants.

Which microbial biofertilizer enhances plant phosphorus uptake?

Rhizobium
Glomus
Bacillus
Methanobacterium
2

Glomus forms mycorrhizal associations with plants and enhances phosphorus absorption.

Which type of bacteria are involved in the secondary treatment of sewage?

Aerobic heterotrophic bacteria
Methanogenic bacteria
Cyanobacteria
Nitrogen-fixing bacteria
1

Aerobic heterotrophic bacteria degrade organic matter in sewage, reducing its Biochemical Oxygen Demand (BOD).

Which of the following microbes is used in the bioremediation of oil spills?

Pseudomonas
Lactobacillus
Saccharomyces cerevisiae
Rhizobium
1

Pseudomonas species degrade petroleum and are used in the bioremediation of oil spills.

Which of the following bioactive molecules is used as an immunosuppressant?

Statins
Streptokinase
Cyclosporin A
Penicillin
3

Cyclosporin A, produced by Trichoderma polysporum, suppresses the immune system in organ transplant patients.

Which of the following statements about sewage treatment is incorrect?

Primary treatment removes solid waste from sewage.
Secondary treatment uses aerobic bacteria.
Tertiary treatment involves microbial action only.
Methanogens are involved in sludge digestion.
3

Tertiary treatment involves chemical and physical processes along with microbial action.

Which of the following microbes is used in the fermentation of bamboo shoots?

Lactobacillus
Saccharomyces cerevisiae
Pseudomonas
Clostridium
1

Lactobacillus helps in the fermentation of bamboo shoots, improving digestibility.

Which of the following microorganisms is responsible for the ripening of Roquefort cheese?

Lactobacillus
Penicillium roqueforti
Saccharomyces cerevisiae
Clostridium butylicum
2

Penicillium roqueforti is a fungus that gives Roquefort cheese its distinct flavor and texture.

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