Select the correct statement from the following
(1) Biogas is produced by the activity of aerobic bacteria on animal waste
(2) Methanobacterium is an aerobic bacterium found in rumen of cattle.
(3) Biogas, commonly called gobar gas, is pure methane
(4) Activated sludge-sediment in settlement tanks of sewage treatment plant is a right source of aerobic bacteria
A common biocontrol agent for the control of plant disease is
(1) Baculovirus
(2) Bacillus thuringiensis
(3) Glomus
(d) Trichoderma
Which one of the following is not used in organic farming?
(1) Glomus
(2) Earthworm
(3) Oscillatoria
(4) Snail
Which of the following plant species you would select for the production of bioethanol?
(1) Brassica
(2) Zea mays
(3) Pongamia
(4) Jatropha
Probiotics are:
(1) safe antibiotics
(2) cancer induding microbes
(3) new kind of food allergens
(4) live microbial food supplement
Which of the following pairs is wrongly matched?
1. Methanogens - Gobar gas
2. Yeast - Ethanol
3. Streptomycetes - Antibiotic
4. Coliforms - Vinegar
Select the correct statement
(1) Acetobacter aceti produces citric acid.
(2) Saccharomyces cerevisiae is used as clot buster
(3) Penicillium notanum restrict the growth of Staphylococci
(4) Methanogens are found in aerobic conditions.
Which of the following statements is incorrect regarding fermentation ?
1. Propionibacterium is used to ferment the cheese.
2. The puffed-up appearance of dough is due to the production of gas.
3. Fermentation in muscle produces ethanol.
4. Toddy is made by fermenting sap from palms.
Which of the following statements is correct?
1. | Aspergillus niger is used for producing cyclosporin A. |
2. | Activated sludge is digested by aerobic bacteria to produce marsh gas. |
3. | Fleming, Chain & Florey were awarded with Nobel Prize for discovering penicillin. |
4. | BOD is amount of oxygen produced by bacteria on decomposition. |
Which of the following microbes is correctly paired with its function ?
(1) Aspergillus niger - Production of lactic acid
(2) Trichoderma polysporum - Lowers blood cholesterol
(3) Saccharomyces cerevisiae - Production of citric acid
(4) Methanogenic bacteria - Gobar gas formation