Which structure is made by the human immune system to fight a pathogen?

• the antibody

• the antigen

• the pathogen

Organ transplants will cause an immune response in the body because...

• red blood cells will be prevented from carrying oxygen.

• antibiotics will be produced that cause blood clotting.

• white blood cells will react to the foreign antigens on the organ.

• the organ prevents antibodies from being made.

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.

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

• antibody

• pathogen

• enzyme

• hormone

What is the best definition of antibodies?

• antibiotics that help you when you are sick

• organs that create pathogens

• pathogens that enter the bloodstream

• proteins that attach to antigens and make them useless

What is the purpose on an antibody?

• to make lymph

• to recognize an antigen

• to create white blood cells

• to transport immune cells

Where are antibodies found?

• In the bones

• In the brain

• In the blood plasma

• In the skin

________ secrete proteins known as antibodies, which assist in the immune response.

• Red blood cells

• White blood cells

• platelets

• plasma

Reorder the following steps in a human's immune response.

• Swelling at the site of infection.

• Barriers such as skin and cilia.

• Destruction of foreign invader (pathogen).

• Antibody creation by white blood cells.

Antibody creation is ​ (a)   to the antigen.

Phagocytes attacking foreign invaders are a​ (b)   ​response.

• very specific

• non-specific

• not affected by

• not related

• feedback