Immune system

What is the purpose of the immune system?

• Protect against pathogens

• Transport materials through the body

• Scare off invaders

Which of the following could be considered to be a type of pathogen?

• Protist

• Virus

• Fungi

• Bateria

The skin, some bacteria on the skin and mucous membranes are all considered to be the first lines of defense for our immune system?

• True

• False

The third line of defense is the most specific to the pathogen that made it that 'far' into the body.

• False

• True

Memory B and T cells are special because they can...

• remember old antibodies

• Remember old pathogens

• Never die

What type of pathogen do Antibiotics help?

• Viruses

• Bacteria

• Fungi

• Protists

What is a vaccine made from?

• Blood from an individual with natural immunity?

• Active pathogens

• Dead or weakened pathogens

When your body has antibodies to a pathogen, this is called having what?

• immunity

• vaccines

• antibiotics

Can antibiotics work against viral infections?

Antivirals can only be used on this type of pathogen​ (a)   ​​

• Viruses
• Bacteria
• Fungi