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WorksheetsRPA Science - Y12 Vaccines
Total questions: 10
Worksheet time: 5mins
What is herd immunity?
When lots but not all of people are immune
When someone told you you are immune
Healthy cows
If you have immunity to a disease:
It can not enter your body
Your body can fight the disease off before it makes you sick.
The germs change as soon as they enter your body.
You will be able to recover very quickly.
Which of these is part of your body's first defenses against disease?
Skin
Antibodies
White blood cells
Heart
A white blood cell destroys an invading germ by:
Changing its chemical composition
Changing its genetic structure
Pulling it apart
Engulfing it
What do antibodies do?
Attach themselves to germs to flag them for destruction.
Engulf and digest germs.
Make your cells impenetrable to germs.
Carry genes from your bloodstream to the outside of your body.
Invading germs can be identified by their:
Leukocytes
Antibodies
Antigens
Red blood cells
What might happen if your immune system lacked memory cells?
Your body wouldn't be able to fight off diseases.
Diseases would make you sicker than normal.
You might get the same disease over and over.
Your body wouldn't be able to produce antibodies.
