Immune System

Your body responds to pathogens by generating a fever. This is used to fight off the bacteria and is an example of what kind of feedback?

• Positive

• Negative

• Neutral

• Constructive

Tags

NGSS.HS-LS1-3

Which of the following is not apart of your body’s first line of defense?

• Skin

• Mucus

• Stomach Acid

• Antibodies

Example of 3rd line of defense.

• T cells and B cells reacting to pathogens

• Phagocytes white blood cells engulfing pathogens

• Stomach acid killing pathogens

• Mucus catching pathogens

These cells activate killer T cells and other helper T cells as well as activate B cells

• Helper T Cells
• Cytotoxic T Cells
• Macrophages
• Suppressor Cells

A white blood cell that makes antibodies

• T cell
• bacteria
• B cell
• mast cell

Tags

NGSS.MS-LS1-2

These cells are responsible for identifying the "enemy" in an immune response.

• Killer-T Cells
• Antibodies
• Helper-T Cells
• B Cells

These cells remain in the blood stream after an immune response.

• Memory B and T Cells
• Killer T Cells and B Cells
• Helper T  and B Cells
• Suppressor Cells and Macrophages

Killer T Cells-

• Kill the pathogen
• Kill your infected body cells
• Kill only viruses
• Kill only bacteria

What is the role of a helper T cell?

• Kills pathogens
• Helps activate killer T and B cells
• Produces antibodies
• Binds to antigens

Tags

NGSS.HS-LS1-4

What is the role of antibodies?

• Kills pathogens
• Helps activate other immune cells
• Produces antibodies
• Binds to antigens and neutralizes pathogen