Alexander Fleming accidently discovered antibiotic penicillin from a mould, but he was working on
1. Streptococci
2. Streptobacilli
3. Staphylobacilli
4. Staphylococci
Find out which one of the following statement is not correct with respect to biogas plant?
1. It has a floating cover which keeps on rising as gas is produced
2. It consists of a 10-15 feet deep tank in which bio-wastes are collected and a slurry of dung is fed
3. Main gases produced are methane, isobutane and propane
4. Spent slurry may be used as fertiliser
The technology of biogas production in india was
1 Imported from Japan
2 Imported from Denmark
3 Imported from USA
4 Developed in India due to efforts of IARI and KVIC
In the STPs, biological process of microbial degradation of organic matter involves
1 Utilisation of activated sludge as inoculant produced in the physical process
2 Mainly involves anaerobic breakdown of organic matter
3 Masses of unicellular bacteria entangled in filamentous bacterial forms represent flocs
4 BOD is greatly reduced by the microbial activity
Match the following column correctly
Column-I Column-II
(A) Aspergillus niger (i) Ethanol
(B) Clostridium butylicum (ii) Statins
(C) Saccharomyces cerevisiae (iii) Citric acid
(D) Trichoderma polysporum (iv) Butyric acid
(E) Monascus purpureus (v) Cyclosporin-A
1. A-iv, B-iii, C-i, D-v, E-ii
2. A-ii, B-v, C-i, D-iii, E-iv
3. A-iii, B-iv, C-i, D-v, E-ii
4. A-v, B-iv, C-i, D-iii, E-ii
Biological control agent is obtained from:-
1. Bacillus thruingiensis
2. Monascus purpureus
3. Streptococcus
4. Aspergillus niger
Filteration and sedimentation are the components of -
1. Primary treatment
2. Secondary treatment
3. Tertiary treatment
4. Quaternary treatment
Pathogens of Arthropods effectively used as biological control agents include
1. Trichoderma
2. Baculoviruses
3. Agrobacterium tumefaciens
4. E. Col
Which is not correct about methanogens?
1. they are archaebacteria
2. they live in marshy areas
3. Methane is their preferred carbon source
4. They are present in guts of several ruminant animals (cow, buffaloes) and they produce biogas (CH) from the dung of these animals.
Read the following four statements (1 – 4), find out certain mistakes in two of them.
(1) | In our stomach lactic acid bacteria play a beneficial role by checking the growth of disease-causing microbes. |
(2) | Lactic acid bacteria produce acid, that coagulates and completely digests the milk protein. |
(3) | Lactic acid bacteria improves the nutritional quality by increasing the amount of Riboflavin |
(4) | Lactic acid bacteria require a suitable temperature for their multiplication. |
Which of the two statements given above are not correct?
1. Statements (1) and (2)
2. Statement (1) and (3)
3. Statement (2) and (3)
4. Statements (2) and (4)