Immune Response

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

• Skin

• Mucus

• Stomach Acid

• Antibodies

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

• Antigens
• Active Immunity
• Antibodies
• Antibiotics

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

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 

What is the role of a B cell?

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

Rabies is a viral disease spread to people by infected animals. A person bitten by an infected animal should be given an injection of specific antibodies.

Following the injection, this person should have

• natural active immunity

• artificial active immunity

• natural passive immunity

• artificial passive immunity

Answer explanation

It is artificial because the antibodies have been inserted into the body artificially.

It is passive because the injection inserts antibodies - the body does not need to create them themselves.

Consider the diagram of four pathogens and three antibodies.

Which one of the following statements is correct?

• Antibody E would be effective against both pathogen S and pathogen R

• Antibody F is effective against three of the pathogens

• There are no antibodies effective against pathogen U

• Antibody G is only effective against pathogen R

What first happens to a B lymphocyte when it becomes activated?

• It divides by mitosis producing a clone of cells.

• It begins transcription and produces antigens.

• It differentiates into memory cells.

• It produces antibodies using its extensive rough endoplasmic reticulum (rER).