Immunity Review

What is the main purpose of the immune system?

• support the body through bones and muscles
• get rid of waste from the body
• protect the body from pathogens
• move blood through the body

 Liz notices that shortly after cutting her arm accidentally the area around the cut is turning red and feeling hot.  Which immune system defense is Liz experiencing?  

• inflammation
• white blood cell clotting
• skin
• fever

Anything that triggers an immune response is a/n

• lymph cell
• antigen
• antibody
• neutrop

Y shaped proteins that may mark pathogens for destruction are

• antigens
• T cells
• antibodies
• neutrophils

After an initial infection, B-cells recognize the measles virus. How is this helpful in human immune response? 

• The B-cells use this recognition to defend the body against other pathogens, such as bacteria.
•  The B-cells more quickly recognize and respond to any other virus that invades the body.
• The B-cells produce antibodies more quickly if the measles virus is encountered again.
• The B-cells transfer this recognition to T-cells, which will then devour the viruses.

Weakened microbes that stimulate the immune system to produce antibodies used to fight future invasions by the same microbe. Example: chicken pox, measles, small pox

• Vaccine

• Disease

• Immunity

A condition in which a person's immune system is overly sensitive to environmental substances that are normally harmless.

• Allergy

• Antigen

• Bacteria

• Virus

Which best describes the relationship between antibodies and antigen?

• One antibody can affect several different antigens.

• Antibodies are specific to one antigen.

• Antigens are produced in response to antigen.

• Immunity develops when an antigen destroys an antibody.

What happens after the second time you are exposed to a pathogen?

• The body will not be able to fight off the pathogen quickly, because it knows how to get into the body easier.

• The body's immune system will react the same was as it did during the first exposure.

• The body can only be exposed to a pathogen a second time if you do not have a vaccine.

• The body will know how to fight off the pathogen quickly, because memory cells have been created after the first encounter.

How do T cells differ from B cells?

• T cells fight pathogens by killing pathogens directly, while B cells fight pathogens by making antibodies.

• T cells only make memory cells, and B cells only make antigens

• T cells fight pathogens by making antibodies, while B cells fight pathogens by killing pathogens directly.

• T cells can only fight off pathogens the body has encountered once, and B cells can fight off any pathogen the body comes across.