8.2 Viruses

Question 1

Viruses

Answer 1

Viruses have surface proteins that are perceived by cells as harmless, a cell is tricked into letting the virus into the body

-One inside the virus hijacks the cell’s mechanisms producing viral parts and form into new viruses

• non living

Question 2

Colds

Answer 2

caused by rhino viruses

Question 3

flu

Answer 3

-cause by influences viruses
-flu shots protect us from influences viruses
-must be taken every year as viruses are known to mutate

Question 4

Parasite

Answer 4

-Lives on or inside of a hosts organism
-Feed off host organisms
-many parasites can cause disease

Question 5

Malaria

Answer 5

• caused by plasmodium which is a single-celled protist organism
  -plasmodium is found in the saliva of certain mosquitoes, when they bite humans the parasite enters the host’s blood stream.
  -mosquitoes are considered vectors as they carry and transmit infectious pathogens

Question 6

amoebic dysentery

Answer 6

• A disease caused by water contaminated with pathogenic amoebae
  -After entering, the parasite infects the host causing diarrhea and fever( can cause death)
  -can be treated with antibiotics