What is the role of antigens in the immune system?
Principle of Immunisation

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Biology
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9th - 10th Grade
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They are foreign molecules that trigger an immune response.
They are the body's defense cells.
They are a type of antibody.
They are a type of white blood cell.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do antibodies help in fighting pathogens?
By transforming into white blood cells.
By directly attacking the body's cells.
By binding to pathogens and signaling other immune cells.
By producing more antigens.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary function of memory cells in the immune system?
To destroy all types of pathogens.
To remember specific pathogens for faster response in future.
To produce more antigens.
To convert into plasma cells.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why might natural immunity not be sufficient for some diseases?
It can lead to permanent immunity.
It develops too quickly.
It takes time to develop, during which the person can suffer.
It always requires medical intervention.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do vaccines contribute to immunity?
By causing the disease in a mild form.
By using dead or weakened pathogens to stimulate an immune response.
By eliminating the need for antibodies.
By introducing live pathogens into the body.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between vaccination and immunization?
Vaccination is the administration of vaccines, while immunization is the immunity developed as a result.
Vaccination and immunization are the same.
Vaccination is the process of developing immunity, while immunization is the administration of vaccines.
Vaccination is only for children, while immunization is for adults.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who pioneered the first vaccine and for which disease?
Louis Pasteur for rabies.
Robert Koch for tuberculosis.
Alexander Fleming for penicillin.
Edward Jenner for smallpox.
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