BrainPop -Vaccines

If you have immunity to a disease:

• a. It cannot enter your body.

• b. Your body can fight the disease off before it makes you sick.

• c. The disease must mutate as soon as it enters your body.

• d. You will be able to recover from the disease very quickly.

Which of these is part of your body’s first defenses against disease?

• a. Skin

• b. Antibodies

• c. White Blood Cells

• d. Heart

How does a white blood cell destroy an invading germ?

• a. By changing its chemical composition.

• b. By changing its genetic structure.

• c. By pulling it apart

• d. By engulfing it

Tags

NGSS.MS-LS1-3

Often, you don’t feel sick for days or weeks after a germ invades your body. Why is this?

• a. It often takes germs awhile to multiply and invade your cells.

• b. Germs must spend a lot of time escaping white blood cells before they can make you sick.

• c. It often takes germs a long time to travel from your air passages to your bloodstream.

• d. It often takes germs awhile to mutate so they can make you feel sick.

What do antibodies do?

• a. engulf and digest germs

• b. make your cells impenetrable to germs

• c. attach themselves to germs to flag them for destruction

• d. Carry germs from your bloodstream to the outside of your body.

What might happen if your immune system lacked memory cells?

• a. Your body wouldn’t be able to fight off diseases.

• b. Diseases would make you sicker than normal.

• c. You might get the same disease over and over.

• d. Your body couldn’t produce antibodies.

How are the germs used in vaccines different from the germs that exist in nature?

• a. The germs used in vaccines can only make animals sick, not humans.

• b. The germs used in vaccines are not real germs.

• c. The germs used in vaccines mutate frequently.

• d. The germs used in vaccines are weakened or altered.