University:West Bengal University of Technology
Course: B.Sc
Subject : MICROBIAL BIOTECHNOLOGY
Year of Question Paper : 2012
CS/B.Sc(H), MICROBIO/SEM-4/MBT-404/2012
2012
MICROBIAL BIOTECHNOLOGY
Time Allotted : 3 Hours Full Marks : 70
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.
GROUP – A
( Multiple Choice Type Questions )
1. Choose the correct answers for any ten of the following :
[Marks 10 × 1 = 10]
i) The alga which can produce SCP is
a) Chlorella b) Spirulina
c) Both (a) and (b) d) none of these.
ii) The ideal temperature for biogas production is :
a) 40° C-50° C b) 37° C
c) 30° C-40° C d) 25° C-27° C.
iii) Antibiotics is considered as
a) primary metabolite b) secondary metabolite
c) amino acid d) hormone.
iv) Ethanol can be used as
a) red petrol b) green petrol
c) blue petrol d) brown petrol.
v) Acetic acid is produced by
a) Clostridium botulinum
b) Gluconobacter aceti
c) Lactobacillus acidophilus
d) none of these.vi) The bacteria which degrades toluene is
a) Acinetobacter calcoacetions
b) Achromobacter xylosoxidars
c) Pseudomonas fluorescence
d) Ochrobacterium sp.
vii) The micro-organism which is not an inhabitant of the
biofilm in trickling filter is
a) Alcaligenes b) Ulothrix
c) Spirogyra d) Flavobacterium.
viii) The device which has high BOD removal efficiency is
a) Trickling filter
b) Rotating biological contactor
c) Aerobic ponds
d) Anaerobic ponds.
ix) The source(s) for production of Bio-diesel is/are
a) Jatropa b) Soybean
c) Microalgae d) all of these.
x) The organism(s) responsible for bioleaching of metals
from their respective ores is/are
a) Acidothiobacillus ferroxidans
b) Ferroplasma sp
c) both (a) and (b)
d) Pseudomonas aeruginosa.
xi) Tetracycline was first isolated from
a) Streptomyces gresius
b) Streptomyces aureofaciens
c) Actinomycetes
d) Paecilomyces sp.
xii) Vermicomposting involves conversion of carbon richorganic compounds to
a) sulphur rich compounds
b) nitrogen rich compounds
c) hydrogen rich compounds
d) sulphide rich compounds.
GROUP – B
( Short Answer Type Questions )
Answer any three of the following. [Marks 3 × 5 = 15]
2. What is the biochemistry for microbial leaching of FeS2 ?
Differentiate tank bioleaching from heap bioleaching. [Marks 3 + 2]
3. Why is Mercury considered as a health hazard ?
4. Write in general the production procedure for Antibiotics.
5. How does Pseudomonas putida degrade oil spill ? Name the
plasmid which is responsible for oil spill degradation. [Marks 4 + 1]
6. How does Bacillus thuringiensis work ? What do you mean
by primary and secondary metabolites ? [Marks 3 + 2]
GROUP – C
( Long Answer Type Questions )
Answer any three of the following. [Marks 3 × 15 = 45]
7. What is biofuel ? Classify biofuel. What are the microorganisms
involved in optimum biogas production ? What is
biodiesel and what are the sources from where biodiesel can
be isolated ? Describe in brief the production procedure for
biodiesel production. How can you characterize biodiesel ?
[Marks 2 + 3 + 3 + 5 + 2]
8. Differentiate chemostat from turbidostat. What is a batch
culture ? Draw the growth curve for a typical batch culture.
Derive Monod's equation for continuous culture. Differentiate
batch from continuous culture. What is fed batch culture ?[Marks 3 + 2 + 3 + 4 + 2 + 1]
9. Describe the process of Orleans method for vinegar
production. What is the role of acidification in vinegar
production ? Why acidification is never recommended before
the completion of sugar fermentation ? What is the cause for
darkening of vinegar ? Name the genera for acetic acid
bacteria. Write the reaction for acetic acid production where
oxygen is required. [Marks 5 + 2 + 2 + 2 + 2 + 2]
10. Why is bacterial heavy metal resistance evolved ? What are
metallothionein ? What are the five mechanisms to evade
metal toxicity ? Why is nutrient removal necessary for
tertiary sewage treatment ? [Marks 4 + 2 + 5 + 4]
11. What role is played by amylase in textile industries ? Name
the organisms used for assay of Vitamin B12. How can you
use micro-organisms as pesticides ? Give an example. What
are its advantages over chemical pesticides ? Justify. What is
the purpose and the strategy of biological phosphorus
removal in tertiary treatment of water ? [Marks 2 + 2 + 3 + 4 + 4]
=======..
![Dr.A.P.J.Abdul Kalam University BSC AG I SEM Rural Sociology & Educational Psychology [AEX511] Dec - 2020 Question Papers](https://blogger.googleusercontent.com/img/a/AVvXsEhY5uhQmwWK1N-CxLfiA9sqbo0THIfiSpBT7quB4pALXfP9cO8aQfIKTa7XnRCms5OD17u5nFLilyx0cwdDbdCGWIBsJ3pzlVPACOfuwEA2BI6gDaqOq0qngBZlxCmbK3-OAj42Rbe1FTVYoXQEf_KNpPDyrNecTFMpJ5BELRLyUK3w12mdzNC4-bnn=s72-w496-c-h640 "Dr.A.P.J.Abdul Kalam University BSC AG I SEM Rural Sociology & Educational Psychology [AEX511] Dec - 2020 Question Papers")
