Immune System
Flashcard
•
Science
•
9th Grade
•
Practice Problem
•
Easy
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an antibody?
Back
An antibody is a Y-shaped protein produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
2.
FLASHCARD QUESTION
Front
What is an antigen?
Back
An antigen is a substance that triggers an immune response, often found on the surface of pathogens.
3.
FLASHCARD QUESTION
Front
What is a pathogen?
Back
A pathogen is any organism that can cause disease, such as bacteria, viruses, fungi, or parasites.
4.
FLASHCARD QUESTION
Front
What role do white blood cells play in the immune system?
Back
White blood cells are crucial for the immune response; they identify and attack pathogens.
5.
FLASHCARD QUESTION
Front
What is the function of antibodies in the immune response?
Back
Antibodies bind to specific antigens on pathogens, marking them for destruction by other immune cells.
6.
FLASHCARD QUESTION
Front
What happens during an organ transplant in relation to the immune system?
Back
The immune system may recognize the transplanted organ as foreign due to its antigens, leading to an immune response.
7.
FLASHCARD QUESTION
Front
What is the difference between active and passive immunity?
Back
Active immunity occurs when the body produces its own antibodies in response to an antigen, while passive immunity is when antibodies are transferred from another source.
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