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12th Biology Monthly Test -1 ( Zoology - Microbes in Human Welfare )

St. Britto Hr. Sec. School - Madurai

12th Biology Monthly Test -1 ( Zoology - Microbes in Human Welfare )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

The most common substrate used in distilleries for the production of ethanol is_________

Soyameal
Groundgram
Molasses
Corn meal

Rhizopus oryzae can produce ___________

Fumaric acid
Malic acid
Acetic acid
Citric acid

Cyclosporin – A is an immunosuppressive drug produced from _______

Aspergillus niger
Manascus purpureus
Penicillium notatum
Trichoderma polysporum

Which of the following bacteria is used extensively as a bio-pesticide?

Bacillus thurigiensis
Bacillus subtilis
Lactobacillus acidophilus
Streptococcus lactis

CO₂ is not released during

Alcoholic fermentation
Lactate fermentation
Aerobic respiration in animals
Aerobic respiration in plants

A free living fungi which is a biocontrol agent _______ .

Phytophthora palmivora
Trichoderma
Polyporus
Peziza

World Biofuel day is observed on ___________.

l0^th September
22^nd April
l0^th August
l7^th October

____________ is not a part of MFC.

Bacteria
Semi permeable Membrane
Cathode
Electric circuit

_________________ got from fungi is used as an immune suppressant in organ transplantation.

Statin
Cyclosporin A
Insulin
Protease

Asper$illus niger helps to produce ___________.

Citric acid
Acetic acid
Turmeric acid
Lactic acid

Which of the following pair is correctly

Acetobacter aceti - Antibiotics
Methanobacterium - Lactic acid
Penicilium notatum - Acetic acid
Saccharomyces cerevisiae - Ethanol

____________ is not a biocontrol agent.

Trichoderma
Dragonfly
Glomus
Buculovirus

Which of the following is not involved in nitrogen fixation?

Pseudomonas
Azotobacter
Anabaena
Nostac

The enzyme _____________ is got from Aspergillus.

Rennet
Zymase
Amylase
Lipase

Mycorrhiza cannot contribute to this process.

Resistance to pathogens
Tolerance to salinity
Help to fix nitrogen
Enhance plant growth

Part - B

Generic 2 - Answer All Question

What is antibiosis?

What is oenology?

How is milk converted into curd? Explain the process of curd formation

What are biopesticides?

What is biocontrol?

Name the stages of anaerobic digestion in a Biogas plant.

What is antibiotic resistance?

What are crygenes?

What is Pasteur effect?

How are antibiotics classified?

What are prebiotics?
Give any two bioactive molecules produced by microbes and state their uses.

What is the use oflipases in Industries?

What are probiotics? Give examples

What is "clot buster"?

Give examples of two antibiotics and their mode of action.

Part - C

Generic 3 - Answer All Question

Draw a microbial fuel cell and label the parts.

What are bio weedicides?
How is cheese produced?

What is the significance ofNucleopolyhedrovirus?

What is Cyclosporin A?

Explain the types ofbioremediation.

Mention a therapeutic use of Yeast.

State the name of an immunosuppressan used in organ transplantation is produced from Trichoderma polysporum and write its uses.

Explain the secondary treatment of waste water.

Justify the role of microbes as a bio-fertilizer

What is GEM? Give an exampl~.

Part - D

Generic 5 - Answer All Question

What is the key difference between primary and secondary sewage treatment?

Write short notes on the following.
a) Brewer's yeast
b) Ideonella sakaiensis
c) Microbial fuel cells

Explain the process of sewage treatment.
When does antibiotic resistance develop?

List the advantages of biogas plants in rural areas.

Explain the working of a biogas plant.

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