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3.3. The Human Defence System and Vaccination GCSE Biology AQA Flashcards | StudBud
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3.3. The Human Defence System and Vaccination GCSE Biology AQA
3.3. The Human Defence System and Vaccination GCSE Biology AQA
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3.3. The Human Defence System and Vaccination GCSE Biology AQA
Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
Herd immunity can protect vulnerable individuals who cannot be vaccinated.
False
True
2
Vaccination can prevent future infection by activating lymphocytes to produce specific antibodies.
True
False
3
The first line of defence in the human body is specific to certain pathogens.
True
False
4
Antibodies are released by phagocytes.
False
True
5
What is the primary function of the first line of defence in the human body against pathogens?
Produce antibodies.
Engulf and digest pathogens.
Prevent entry of microorganisms.
Identify specific antigens.
6
Which type of white blood cell is responsible for phagocytosis, where it engulfs and digests pathogens?
Phagocytes
Antibodies
Lymphocytes
Antigens
7
Why do some viruses like colds, flu, and Covid-19 pose challenges for vaccine development?
They mutate quickly, changing their surface antigens.
They are not harmful.
They are easily destroyed by antibiotics.
They do not have antigens.
8
Which of the following is NOT one of the body's first lines of defence?
Stomach acid
Antibodies
Eyelashes
Skin
9
Phagocytes specifically target and destroy certain pathogens.
True
False
10
The polio virus may soon be the second pathogen to be eradicated worldwide.
False
True
11
How does vaccination induce immunity in the body?
By removing memory cells from the body.
By killing pathogens directly.
By activating lymphocytes to produce antibodies.
By preventing the clotting process.
12
An organism which causes disease, is also called a...
pathogen
bacteria
microbe
cell
13
What do memory cells do in the immune system?
Produce antibodies.
Engulf pathogens.
Kill bacteria.
Recognise and respond more quickly to future infections.
14
Which part of the body is coated in a slimy substance called mucus, which traps dust particles and microorganisms?
Kidneys
Liver
Stomach
Trachea
15
What is the main role of stomach acid in the human body's defence system?
Produce antibodies
Move mucus
Produce mucus
Kill pathogens
