Which of the following organisms is used in the production of beverages?
1. Penicillium notatum
2. Saccharomyces cerevisiae
3. Aspergillus niger
4. Clostridium butylicum
The gas responsible for puffing-up appearance of dough comes from:
(1) Aerobic respiration
(2) Fermentation
(3) Photosynthesis
(4) Photorespiration
Which of the following antibiotics was discovered first?
1. Streptomycin
2. Neomycin
3. Erythromycin
4. Penicillin
Acetic acid is produced by a:
(1) Fungus
(2) Bacterium
(3) Yeast
(4) Virus
Citric acid is produced by:
(1) Acetobacter aceti (a bacterium)
(2) Yeast (a fungus)
(3) Aspergillus niger (a fungus)
(4) Streptococcus (a bacterium)
Which of the following bacteria has a role in removing clots from the blood vessels?
1. Bacillus thuringiensis
2. Clostridium butylicum
3. Streptococcus
4. Lactobacillus
Statins used for lowering blood-cholesterol level are extracted from:
(1) Algae
(2) Bacteria
(3) Virus
(4) Yeast
The bioactive molecule cyclosporin A is used in:
1. Whooping cough
2. Diphtheria
3. Leprosy
4. Organ-transplant patients
Cyclosporin A is produced from:
(1) Trichoderma polysporum (a fungus)
(2) Bacillus (a bacterium)
(3) Aspergillus (a fungus)
(4) All of these
The primary treatment of sewage involves:
1. Digestion
2. Decomposition
3. Sedimentation and filtration
4. None of these