Causes of Infections

Causes of Infections

Multiple Choice

What causes infections?

• Microorganisms

• Air

• Water

• Macroorganisms

What are Microorganisms?

A small living organism that you need a microscope to see.

Multiple Choice

Are ALL microorganisms bad? (As in harmful to humans, plants and animals)

• Yes

• No

Good vs. Evil

• Pathogen: Microbe that causes disease or infection.

• Normal Flora: Microbes that are beneficial when present.

Poll

What do you think? Good or bad?

Flu virus.

• Pathogen

• Normal flora

Poll

What do you think? Good or bad?

Bacteria in our digestive system.

• Pathogen

• Normal flora

Poll

What do you think? Good or bad?

Baker's yeast.

• Pathogen

• Normal flora

Poll

What do you think? Good or bad?

Streptococcal pharyngitis. (Hint: You end up with a sore throat)

• Pathogen

• Normal flora

Microbes and Infections

Multiple Choice

Which microbe is the smallest of them all? (You need an electron microscope to see it)

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Multiple Choice

Which microbe is animal like?

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Multiple Choice

Which microbe is a single-celled prokaryote that is found everywhere?

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Multiple Choice

Which microbe is a eukaryote that lives on dead or decaying organic matter?

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Multiple Choice

Which microbe lives in fleas and ticks, and is spread by their bites?

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Multiple Choice

Which microbe reproduces inside other living cells?

• Bacteria

• Fungi

• Protozoa

• Rickettsiae

• Virus

Poll

How do pathogens cause infections? (Select all that apply)

• Some produce toxins in the body

• Some cause allergic reactions in the body

• Some attack and destroy living cells

• Absorb nutrients from our bodies