RPA Science - Y12 Vaccines

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.

Tags

NGSS.HS-LS1-3

Edward Jenner succeeded in creating a vaccine against smallpox by injecting patients with material of which disease?

• Small pox
• Cow pox
• Cattle Virus
• Measles Virus

What is the function of innate immune response?

• Act very rapid as a first line of defense to eliminate the infection
• Trap microbes so they cannot spread in our body freely
• Coordinate and support adaptive immunity
• All of the above

Since we have our immune system to protect us from disease, why do we still need a vaccine?

• Because some diseases are too severe for our immune system.
• Because adaptive immunity takes days to weeks to initiate a response and sometimes it is too late.
• Because some people are immune deficient or have weak immune systems.
• All of the above

Tags

NGSS.HS-ETS1-3