Immune System (R)

Front

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

Back

pathogen

Front

What is the body's first line of defense against infection by foreign organisms? Options: antibodies, lymph nodes, white blood cells, the skin

Back

the skin

Front

What do antibodies attach to on the pathogen?

Back

Antigens

Front

What is the term for a strong response to a harmless antigen in the environment?

Back

An allergy

Front

An immune response that occurs in the human body is shown above. This activity helps to do which of the following?

• Produce antibiotics to control disease
• Provide protection against a specific pathogen
• Provide protection against all types of pathogens
• Eliminate harmful gene alterations

Back

Provide protection against a specific pathogen

Front

The large green structure with the antigen on its surface is a (an)

Back

pathogen

Front

Which of the following is FALSE about antibodies?

• They are Y-shaped proteins.
• They are made by the immune system.
• They can attack any antigen that enters the body.
• They remain in the bloodstream for a long time after they are produced.

Back

They can attack any antigen that enters the body.

Front

What is the name of the process where white blood cells surround, engulf and digest pathogens?

Back

phagocytosis

Front

What process is being shown in the diagram? Options: production of antibodies, production of antigens, phagocytosis, production of antitoxins

Back

phagocytosis

Front

What do vaccines most often contain to prepare the body against future infections? Options: antibodies, antibiotics, white blood cells, weakened pathogens.

Back

weakened pathogens