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1. What is an antigen?
A
A type of white blood cell.
B
A vaccine component.
C
A substance that triggers an immune response.
2. What do antibodies bind to?
A
Pathogens.
B
Toxins.
C
Antigens.
3. What is the primary function of antibodies?
A
To enhance blood flow.
B
To neutralize or eliminate antigens.
C
To produce antigens.
4. Which part of the immune system produces antibodies?
A
T cells.
B
Macrophages.
C
B cells.
5. What shape do antibodies typically have?
A
Circular.
B
Linear.
C
Y-shaped.
6. What is the term for the specific region on an antigen that antibodies bind to?
A
Antibody site.
B
Binding domain.
C
Epitope.
7. How do antibodies help in pathogen elimination?
A
By marking them for destruction.
B
By consuming them.
C
By replicating them.
8. What type of bond forms between an antigen and an antibody?
A
Ionic bonds.
B
Non-covalent interactions.
C
Covalent bonds.
9. What is the role of memory B cells?
A
To remember past infections for faster response.
B
To destroy pathogens directly.
C
To produce more antigens.
10. What happens when an antibody binds to an antigen?
A
It changes the antigen's structure.
B
It makes the antigen stronger.
C
It can neutralize the antigen or mark it for destruction.