Which organelle is responsible from green color of plant leaves?
A. cytoplasm B. chloroplast C. chlorophyll D. vacuole
Coolants in refrigerators and air conditioners contribute to what environmental hazard?
A. Acid rain B. Ozone depletion C. Oil spillage D. Global warming
People from an area near a factory are suffering from bronchitis, what can be the cause of it?
A. Polluted water from factory B. Polluted air from factory C. Toxic matter from factory D. Solid waste form factory
What are the different shapes of bacteria?
A. Rod and round only B. Round and spiral only C. Rod and spiral only D. Spiral, rod and round only
A cup of yogurt can have up to of bacteria?
A. Hundreds B. Thousands C. Millions D. Billions
The tip of tongue is sensitive to what type of taste?
A. Sweet B. Bitter C. Sour D. Salty
Which of the structures is not present in plant cell?
A. cell wall B. vacuole C. centriole D. nucleus
There are introduced into the body during vaccination.
A. Pathogen B. weak or dead pathogens C. Antibiotic D. Antiviral
The first dose of polio vaccine is administrated at the age of:
A. 2 months B. 6 months C. 6-18 months D. 4-6 years
The preparation that contains both Immunoglobulin’s and vaccine should be given at the different sites in the body for which one of the following reasons?
A. To provide immediate B. To activate T cells C. To prevent possible hypersensitivity D. To prevent antibodies from neutralizing that immunogenic