Questions
Which of the following organisms cannot thrive and multiply outside a living cell?
- Bacteria
- Virus
- Protozoa
- Fungi
- Algae
Which of the following diseases can be caused either by bacteria or virus?
- Influenza
- Dysentery
- Cholera
- Tuberculosis
- Measles
Which of the following statements is not true?
- Fungi and algae may live in colonies.
- Some microorganisms grow on other organisms.
- Some fungi can be multi-cellular also.
- Viruses multiply in animal cells only.
- Some fungi can be seen with magnifying glass.
Antibiotics are a class of drugs which kill or stop the growth of disease causing microorganisms.
What is the source of antibiotics?
- Snake venom
- Microorganisms
- Plants
- Insects
- None of these
Which of the following diseases cannot be prevented by prior injection of killed or weakened microbe in a healthy body?
- Malaria
- Smallpox
- Hepatitis
- Cholera
- Tuberculosis
Which of the following micro-organisms is mostly used in baking industry?
- Bacteria
- Protozoa
- Fungi
- Virus
- Algae
Which of the following micro organisms increases the nitrogen content of soil?
- Aspergillus
- Blue green algae
- Lactobacillus
- Spirogyra
- Yeast
Some of the microorganisms cause disease in human beings, plants and animals.
What are these disease causing microorganisms called?
- Pathogens
- Antigens
- Decomposers
- Vectors
- Carriers
Antibiotics kill or stop the growth of microorganisms by blocking or altering their biochemical pathways.
Which of the following diseases cannot be controlled by use of antibiotics?
- Tuberculosis
- Typhoid
- Cholera
- Pneumonia
- Influenza
Which of the following diseases does NOT spread by means of air, water or food?
- Cholera
- Plague
- Tuberculosis
- Diarrhoea
- Typhoid
Which of the following organisms is responsible for Dengue fever?
- Anopheles mosquito
- Aedes mosquito
- Protozoa
- Virus
- Bacteria
Which of the following is true for Citrus canker?
- It is caused by fungus and spread by air.
- It is caused by a virus and spread by insects.
- It is caused by virus and spread by air.
- It is caused by bacteria and spread by air.
- It is caused by bacteria and spread by insects.
Which of the following diseases can be prevented by use of insecticides and preventing collection of water in surroundings?
- Typhoid
- Malaria
- Dysentery
- Tuberculosis
- Cholera
Which of the following diseases is caused by fungi and spread through air?
- Rust of wheat
- Yellow vein mosaic of Okra
- Citrus canker
- Wilts
- None of these
Which of the following microorganisms can be found in the roots of pea plant?
- Aspergillus
- Spirogyra
- Rhizobium
- Paramecium
- Yeast
Pasteurisation is a physical method of food preservation. Which of the following food items is preserved by pasteurisation?
- Jams
- Vegetables
- Pickles
- Milk
Which of the following is not derived from microorganisms?
- Streptomycin
- Erythromycin
- Tetracycline
- Penicillin
- Aspirin
Which of the following does not help in elimination of micro-organisms?
- Antibodies
- Antibiotics
- Antigens
- Antiseptics
- Disinfectants
For what purpose yeast is grown on natural sugars present in grains like barley, wheat, rice, crushed fruit juices, etc.?
- Production of wine and alcohol
- Production of bread
- Protection of these crops from microorganisms
- Protection of these crops from pests
- Improving yield of these crops
Which of the following diseases has been eliminated in most parts of world owing to worldwide vaccination campaign against it?
- Tuberculosis
- Polio
- Smallpox
- Chickenpox
- Hepatitis