The maximum concentration of alcohol in beverages that are naturally fermented is:

  • 5 - 10%
  • 10 - 15%
  • 20 - 25%
  • 45 - 50%

Big holes in Swiss cheese are made by a:

  • a machine

  • a bacterium that produces methane gas

  • a bacterium producing a large amount of carbon dioxide

  • a fungus that releases a lot of gases during its metabolic activites.

The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:

  • Vitamin C

  • Vitamin D

  • Vitamin B12

  • Vitamin E

Which one of the following alcoholic drinks is produced without distillation?

  • Wine

  • Whisky

  • Rum

  • Brandy

Match the following list of bacteria and their commercially important products:

 

Bacterium

 

Product

(i)

Aspergullus niger

(a)

Lactic acid

(ii)

Acetobacter aceti

(b)

Butyric acid

(iii)

Clostridium Butylicum   

(c)

Acetic acid

(iv)   

Lactobacillus 

(d)   

Citric Acid

Choose the correct match:

  • (i) - b, (ii) - c, (iii) - d, (iv) - a

  • (i) - b, (ii) - d, (iii) - c, (iv) - a

  • (i) - d, (ii) - c, (iii) - b, (iv) - a

  • (i) - d, (ii) - a, (iii) - c, (iv) - b

The residue left after methane production from cattle dung is:

  • burnt

  • burried in land fills

  • used as manure

  • (3) used in civil construction

BOD of waste water is estimated by measuring the amount of:

  • total inorganic matter

  • biodegradable organic matter

  • oxygen evolution

  • oxygen consumption.

The free-living fungus Trichoderma can be used for:

  • killing insects

  • biological control of plant diseases

  • controlling butterfly caterpillars

  • producing antibiotics

The primary treatment of waste water involved the removal of:

  • dissolved impurities

  • stable substances

  • toxic substances

  • harmful bacteria.

Identify the incrrectly matched pair:

  •  Trichoderma harzianum -  Biocontrol

  •  Aspergillus niger  - source of citric acid

  •  Baculovirus - narrow spectrum species specific insecticides

  •  Monascus purpureus - source of cholesterol synthesizing enzyme

Identify the incorrect matched pair:

  • Trichoderma harzianum: Cyclosporin A

  • Monascus purpureus: Statins

  • Aspergillus niger: Citric acid

  • Streptococcus pyogenes: Clot buster

Ganga Action Plan and Yamuna Action Plan are initiated by

  • Ministry of Environment and Forest

  • Ministry of Environment

  • Ministry of Water bodies

  • Ministry of Forest

Which of the following is not correct with respect to biogas?

  • Contains predominantly Methane

  • Produced by microbial activity

  • May be used as fuel

  • Not inflammable

The type of the gas produced as the end product of growth and metabolism by microbes depend on

  • Microbes

  • Type of organic substrate they utilize

  • Type of inorganic salts taken by them

  • Both A and B

Identify the incorrectly matched pair:

1

Streptococcus

Clot buster

2.

Monascus purpureus

Statins

3.

Trichoderma harziamum

Immunosuppressant

4.

Aspergillus niger

Citric acid

 
  • 1
  • 2
  • 3
  • 4

Baculoviruses are:

  • Species specific, narrow spectrum insecticides

  • Species specific, broad spectrum insecticides

  • Non specific, narrow spectrum inseticides

  • Non specific, broad spectrum insecticides

Gases found in biogas are:

  • Carbon dioxide is the only gas
  • Methane is the only gas
  • Carbon dioxide, hydrogen sulphide and Methane
  • Carbon dioxide, hydrogen cyanide and Methane

In the given diagram the gas X can be :

  • Hydrogen

  • Carbon monoxide

  • Ammonia

  • Oxygen

The virus shown here is a causative agent of :

  • Intestinal infections

  • Respiratory infections

  • CNS infections

  • Genito-urinary infections

Consider the following statements:

I. Statins, used as blood cholesterol lowering agents, are derived from Monascus purpureus

II. Cyclosporin A, derived from Trichoderma, is used as an immunosuressent

III. Baculoviruses, in the genus Nucleopolyhederovirus, are species specific, broad spectrum insecticides

Which of the above statements are true?

  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Modern detergents contain enzyme preparations of

  • acidophiles

  • alkaliphiles

  • thermoacidophiles

  • thermophiles

High value of BOD (Biochemical Oxygen Demand) indicates that

  • Water is pure

  • water is highly polluted

  • water is less polluted

  • Consumption of organic matter in the water is higher by the microbes

Which of the following in sewage treatment removes suspended solids?

  • Tertiary treatment

  • Secondary treatment

  • Primary treatment

  • Sludge treatment

A. Saccharomyces  cerevisiae

1. Production of immunosuppressive agents

B. Monascus purpureus

2. Ripening of Swiss Cheese

C. Trichoderma polysporum

3. Commercial production of ethanol

D. Propionibacterium sharrmanii   

4. Production of blood-cholesterol lowering agents      

Codes

 

A    

B    

C    

D

(1)  

3

4

1

2

(2)

4

3

2

1

(3)

4

2

1

3

(4)

3

1

4

2

 
  • 1
  • 2
  • 3
  • 4

What gases are produced in anaerobic sludge digesters?

  • Methane and CO2 only

  • Methane, Hydrogen sulphide and CO2

  • Methane, hydrogen sulphide and O2

  • Hyderogen sulphide and CO2

A good producer of citric acid is

  • Aspergillus

  • Pseudomonas

  • Clostridium

  • Saccharomyces

Monascus purpureus is a yeast used commercially in the production of

  • ethanol

  • streptokinase for removing clots from the blood vessels.

  • citric acid

  • blood cholesterol lowering statins.

A patient brought to a hospital with myocardial infarction is normally immediately given

  • penicillin                         

  • streptokinase

  • cyclosporin-A                   

  • statins

Which one of the following microbes forms symbiotic association with plants and helps them in their nutrition?

  • Azotobacter

  • Aspergillus

  • Glomus

  • Trichoderma

Yeast is used in the production of

  • citric acid and lactic acid

  • lipase and pectinase

  • bread and beer

  • cheese and butter

0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Botany Quiz Questions and Answers