MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The fruit juices turn bitter in taste if they are kept in open place for some time, because of [CPMT 1977] |
| A. | Bacteria of the atmosphere react with the juice |
| B. | Fermentation of the juice by yeast |
| C. | Some internal factors |
| D. | All the above three statements are correct |
| Answer» C. Some internal factors | |
| 2. |
The main technique involved in agricultural biotechnology is called [MP PMT 1998] |
| A. | Tissue culture |
| B. | Transformation |
| C. | Plant breeding |
| D. | DNA replication |
| Answer» B. Transformation | |
| 3. |
Due to which of the following organism, yield of rice is increased [CBSE PMT 1999] |
| A. | Anabena |
| B. | Bacillus popilliae |
| C. | Sesbania |
| D. | Bacillus polymena |
| Answer» B. Bacillus popilliae | |
| 4. |
Antibiotics are mostly obtained from [MP PMT 1997; AIEEE 2003] |
| A. | Fungi |
| B. | Actinomycetes |
| C. | Cyanobacteria |
| D. | Both a and b |
| Answer» E. | |
| 5. |
Waksman got Nobel Prize for the discovery of |
| A. | Chloromycetin |
| B. | Neomycin |
| C. | Streptomycin |
| D. | Penicillin |
| Answer» D. Penicillin | |
| 6. |
The phenomenon of antibiotic was discovered by |
| A. | Fleming |
| B. | Pasteur |
| C. | Waksman |
| D. | Babes |
| Answer» E. | |
| 7. |
Kohler and Milstein developed biotechnology for the production of [CBSE PMT 1989; MP PMT 2002] |
| A. | Myelomas |
| B. | Steroid conversion |
| C. | Monoclonal antibodies |
| D. | Immobilised enzymes |
| Answer» D. Immobilised enzymes | |
| 8. |
Use of living organisms or their substances in industrial processes is called |
| A. | Microbiology |
| B. | Biotechnology |
| C. | Industrial engineering |
| D. | Genetic engineering |
| Answer» C. Industrial engineering | |
| 9. |
Which of the following established the scientific basis of vaccination [RPMT 1985] |
| A. | Louis Pasteur |
| B. | Edward Jenner |
| C. | Cesar Milstein |
| D. | George Kohler |
| Answer» B. Edward Jenner | |
| 10. |
Who first realized the use of yeast in fermentation |
| A. | Christian Hansen |
| B. | Louis Pasteur |
| C. | A. Spike |
| D. | D.A. Jackson |
| Answer» C. A. Spike | |
| 11. |
The enzyme diastase was identified by [RPMT 1987] |
| A. | S.A. Waksman |
| B. | A. Fleming |
| C. | Christian Hasen |
| D. | Payen and Persoz |
| Answer» E. | |
| 12. |
Sex hormone is a |
| A. | Fat |
| B. | Protein |
| C. | Carbohydrate |
| D. | Steroid |
| Answer» E. | |
| 13. |
For the manufacture of gluconic acid and citric acid, which of the followingmicro-organism is used [CPMT 1998] |
| A. | Lactobacillus bulgaricus |
| B. | Acetobacter sp. |
| C. | Aspergillus niger |
| D. | Gluconobacter sp. |
| Answer» D. Gluconobacter sp. | |
| 14. |
First antibiotic isolated was [BHU 1983] |
| A. | Terramycin |
| B. | Neomycin |
| C. | Penicillin |
| D. | Streptomycin |
| Answer» D. Streptomycin | |
| 15. |
Which row material is used in fermentation process of making beer [Orissa JEE 2005] |
| A. | Buffer needed to control pH |
| B. | Batch and feed possible |
| C. | Controlled dissolved oxygen |
| D. | Easy in process sampling |
| Answer» D. Easy in process sampling | |
| 16. |
Dough kept overnight in warm weather becomes soft and spongy because of [CBSE PMT 2004] |
| A. | Cohesion |
| B. | Osmosis |
| C. | Absorption of carbon dioxide from atmosphere |
| D. | Fermentation |
| Answer» E. | |
| 17. |
Alcoholic beverages are obtained with the help of [Karnataka CET 1998] |
| A. | Penicillium |
| B. | Yeast |
| C. | Blue-green algae |
| D. | None of the above |
| Answer» C. Blue-green algae | |