Microbes - 07-06-23

Cyclosporin A is produced from –

• (a) Trichoderma polysporum (a fungus)

• (b) Bacillus (a bacterium)

• (c) Aspergillus (a fungus)

• (d) all of these

Biogas contains –

• (a) CO₂

• (b) H₂S

• (c) CH₄

• (d) all of these

Acetic acid is produced by a

• (a) fungus

• (b) bacterium

• (c) Yeast

• (d) virus

Citric acid is produced by –

• (a) Acetobacter aceti (a bacterium)

• (b) Yeast (a fungus)

• (c) Aspergillus niger (a fungus)

• (d) Streptococcus (a bacterium)

The solids which settle after primary treatment of sewage are called

• (a) primary sludge

• (b) activated sludge

• (c) flocs

• (d) total solids

During waste water treatment, trickling filter is used for

• (a) Primary treatment

• (b) Secondary aerobic treatment

• (c) Secondary anaerobic treatment

• (d) Tertiary treatment

Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from:-

• (a) Petroleum industry

• (b) Sugar industry

• (c) Domestic sewage

• (d) Dairy industry

Large holes in Swiss cheese are formed due to production of a large amount of CO₂ by

• (a) Propionobacterium

• (b) Mycobacterium

• (c) Saccharomyces

• (d) Penicillium

Which of the following is a commercial blood cholesterol lowering agent?

• (a) Cyclosporin A

• (b) Statin

• (c) Streptokinase

• (d) Lipases

Concanavalin A is

• (a) an alkaloid

• (b) an essential oil

• (c) a lectin

• (d) a pigment