Bio ch. 17 pt 1 review

What is the main function of the skin as described in the material?

• To help with digestion

• To act as a barrier covering the whole body

• To produce hormones

• To store energy

What is the main function of B and T cells in the immune system?

• To produce hormones

• To recognize and attack certain pathogens

• To transport oxygen

• To digest food

What is the main function of antibodies in the body?

• To provide energy to cells

• To protect the body against foreign substances

• To help in digestion of food

• To transport oxygen in the blood

If the same kind of foreign substance enters the body again, what do the remaining antibodies do?

• Ignore the substance

• Destroy the substance before it can do harm

• Help the substance multiply

• Turn into red blood cells

Which of the following is an example of a disease that can lead to active acquired immunity?

• Influenza

• Chickenpox

• Common cold

• Malaria

Explain the role of T cells in activating B cells and describe the sequence of events that leads to the destruction of antigens.

• T cells call B cells to action, B cells produce antibodies, antibodies react with antigens, some antibodies cause antigens to clump, and phagocytes attack the clumped antigens.

• T cells destroy antigens directly, B cells produce red blood cells, and phagocytes clean up the debris.

• T cells produce antibodies, B cells call phagocytes, and antigens are converted into nutrients.

• T cells and B cells both produce hormones that dissolve antigens.

What is passive acquired immunity?

• Immunity where antibodies are produced by your own body

• Immunity where antibodies are obtained from somewhere else

• Immunity that lasts for a lifetime

• Immunity that only occurs after vaccination

What is a vaccine?

• A serum made from dead or weakened form of bacteria or virus

• A type of antibiotic

• A vitamin supplement

• A painkiller

Which of the following is an example of a disease caused by bacteria?

• Cholera

• Influenza

• Malaria

• Chickenpox

What should you do if you have allergies before taking antibiotics?

• Tell your doctor about your allergies

• Ignore the allergies

• Take more antibiotics

• Only take antibiotics at night