Immune Responses

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

The part of foreign materials that cause a response from the immune system are called _____________________.

• Antigens
• Active Immunity
• Antibodies
• Antibiotics

Antigens are part of...

• Your own immune system.
• The pathogen.

The body detects pathogens by their...

• Antigens
• Antibodies
• Histamines
• DNA

A nonspecific defensive response of the body to tissue injury characterized by dilation of blood vessels and swelling.

• immunity
• interferon
• immunization
• inflammation

The diagram below shows a cell in the human body engulfing a bacterial cell.

The cell labeled X is most likely a

• red blood cell

• white blood cell

• liver cell

• nerve cell

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Which pathogen is only one cell big?

• virus

• bacteria

• fungus

• parasite/protist

Disease-causing microorganism, such as a bacterium or virus.

• pathogen 
• allergen
• prion 
• antigen