Agree Disagree

1._______ ________

2._______ ________

3._______ ________

5._______ ________

4._______ ________

Parasites cause harm to the organisms they feed off of.

Some parasites can affect an animal’s brain, even a human’s brain.

All parasites are too small to be seen with the human eye.

Parasites can harm organisms by spreading bacteria.

Parasites are more common than viruses and bacteria.

Chapter 11, section 4Parasites

I. Parasitic RelationshipA. Parasite – living off the host and causing harm

1. either directly harm the host or transmit disease to the host

http://www.youtube.com/watch?v=4j6jikayKZA

C. Host – organism being harmed by the parasite

http://www.youtube.com/watch?v=vMG-LWyNcAs

“super gross” caterpillar host

II. Human ParasitesA. Tick – attached to skin and feeds off blood

1. harms by spreading Lyme Disease

http://www.youtube.com/watch?v=-v3fk7Wzzyk

B. Tapeworm – lives inside the intestine and absorbs energy from your food.

C. Malaria – cause by plasmodium organism, spread by mosquitos

1. lives in and destroys liver and red blood cells.

D. Amoeba – tiny organism found in freshwater, can lodge in a person’s brain through their nose

1. Uses brain tissue as a food source.

http://www.youtube.com/watch?v=GDFDe61wwhA

Deadly Amoeba kills 9 year old boy

http://www.youtube.com/watch?v=jztYHvjPUTw

Deadly Amoeba kills Florida girl

http://www.youtube.com/watch?v=fkiL-v4X8w8

Zombie snails

Agree Disagree

1._______ ________

2._______ ________

3._______ ________

5._______ ________

4._______ ________

Parasites cause harm to the organisms they feed off of.

Some parasites can affect an animal’s brain, even a human’s brain.

All parasites are too small to be seen with the human eye.

Parasites can harm organisms by spreading bacteria.

Parasites are more common than viruses and bacteria.

http://www.youtube.com/watch?v=yRglUAttmzQ