PBS

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

Vaccinations are an example of:

• Innate immunity

• Acquired immunity

People who study disease outbreaks are

• epidemiologists.

• paleontologists.

• entymologists.

• forensic anthropologists.

A sudden increase in the occurrence of a disease in an area is

• an outbreak.

• endemic.

• a pandemic.

• nosocomial.

Organisms that cause infectious disease are called

• pathogens.

• hosts.

• antibodies.

• nosocomial.

What does PBS stand for in a scientific context?

• Phosphate Buffered Saline

• Protein Binding Solution

• Polymer Binding Substance

• Particle Buffer Solution

What is the primary use of PBS in laboratory experiments?

• To stain cells

• To buffer solutions

• To wash cells

• To fix cells

Which of the following is a key component of PBS?

• Sodium chloride

• Calcium chloride

• Magnesium sulfate

• Potassium iodide