PBS Unit 3

This non-living infectious protein causes normal brain proteins to fold abnormally, leading to neurological symptoms (confusion, hallucinations).

• Prions

• Viruses

• Bacteria

• Fungi

• Helminths

An infected individual hugs an uninfected individual, depositing the pathogen on the new person. This form of disease transmission is an example of:

• Direct Contact

• Indirect Contact

• Droplet Transmission

• Vector Transmission

An infected individual pays at the grocery store with infected cash, spreading the pathogen to the cashier. This form of disease transmission is an example of:

• Direct Contact

• Indirect Contact

• Droplet Transmission

• Vector Transmission

West Nile Virus is spread through in intermediate insect that carries the pathogen: mosquitos. This form of disease transmission is an example of:

• Direct Contact

• Indirect Contact

• Droplet Transmission

• Vector Transmission

An infected individual coughs into the air, then an uninfected individual inhales the particles, acquiring the pathogen. This form of disease transmission is an example of:

• Direct Contact

• Indirect Contact

• Droplet Transmission

• Vector Transmission

When infectious pathogens enters the body, white blood cells (B-cells), produce THESE molecules to attack or impair the pathogens:

• Antigens

• Antibodies

• Toxins

• Vaccines

These components of our innate, or nonspecific, immune system are found in our nose, trachea, and lungs and work with mucus to trap foreign invaders:

• Digestive Enzymes

• Secretions

• Cilia

• Phagocytes

These components of our innate, or nonspecific, immune system are found in digestive tract and on our skin to prevent foreign invaders from attaching.

• Normal flora

• Secretions

• Cilia

• Phagocytes

The purple bacteria in this image are

• cocci.

• bacilli.

• spirilla.

The bacteria in this image are

• cocci.

• bacilli.

• spirilla.