Pathogens and Diseases Unit Review Day

Test is TOMORROW

Public health presentation• Resident germs vs. transient germs (Powerpoint)

• Common cold, Influenza, stomach flu symptoms (brochure)

Intro to Pathogens

Know key terms (and the ones on your unit review)• Pathogen Vector• Host Transmission• Parasite Endemic• Pathogenesis Epidemic• Virulence Pandemic• Epidemiology Eradication• Aetiology

Types of Pathogens• 1)

• 2)

• 3)

• 4)

• 5)

Protection from PathogensPreventative Reactionary

How the world keeps Diseases from Spreading (Part 1)

• Bubonic plague

• Miasma Theory

• Germ Theory

Canada’s role in disease spread prevention

• PHAC:

• Fluwatch

Human Immune Response• Three lines of Defense

• 1) External Barriers

• 2) Inflammatory Response

• 3) Specific Immune Response

Modes of Transmission

• What are some modes of transmission – give example of a pathogen passed that way:

Virus Lytic Cycle (Gizmo note!)

• How do Viruses reproduce?

• 5 steps of Virus Lytic Cycle…..

Step Summary

1

A lytic bacteriophage virus attaches itself to a bacterial cell. The virus is a very simple structure, composed of a protein capsid, nucleic acid, and a tail section.

↓ 2

The virus injects its nucleic acid into the cell. The nucleic acid uses the cell’s ribosomes to make virus proteins. The proteins break up the cell’s DNA.

↓

3

The virus capsid and tail, now useless, detach from the cell and disintegrate. Inside the cell, the viral nucleic acid takes over and directs the production of new virus proteins and nucleic acid.

↓

4

The virus proteins and nucleic acid assemble into new viruses.

↓

5

Special proteins produced by the viral nucleic acid cause the host bacterial cell to lyse (burst), destroying the cell in the process. The numerous new viruses are now free to infect other cells.

Test format

• Multiple choice (10 marks)• Fill in blank (5 marks)• Matching (5 marks)• Short answer (25 marks)

[knowledge]• Application (25 marks)

[Thinking/inquiry]

• Total 70 marks

Studying tips• Complete review – and then read your review

a few times• Read through your notes• Read through your homework answers• Complete any unfinished homework• Work with a friend and ask each other

questions (quiz each other!)• Look to the teacher page if you have parts of

your notes that are incomplete!