CCCN: T-02. Unit 2. pp. 26, 27

Happiness is a sign if illness.

• True

• False

The immune system produces bacteria.

• True

• False

Two things that cause illnesses are viruses and bacteria.

• True

• False

Bacteria have many cells.

• True

• False

Humans don't have any bacteria living inside.

• True

• False

All kinds of bacteria are bad for humans.

• True

• False

There are more bacteria in your mouth than the total of people living on earth.

• True

• False

You can use antibiotics against bacteria.

• True

• False

Viruses are bigger than bacteria.

• True

• False

Viruses need a host to survive.

• True

• False