Topic 13 Review Game

What is the primary function of white blood cells (leukocytes) in the immune system?

• To carry oxygen throughout the body

• To defend the body

• To transport nutrients to cells

• To produce hormones for growth

A scientist is studying herd immunity. If a disease requires 85% of a population to be immune to prevent its spread, and only 60% of the population is vaccinated, what is the most likely outcome and why?

• The disease will be eradicated because 60% immunity is sufficient to stop all transmission

• The disease will continue to spread because not enough people were vaccinated

• The disease will mutate and become more dangerous because of partial immunity in the population

• The disease will only affect vaccinated individuals since they have been exposed to the pathogen

How does HIV specifically weaken the immune system over time?

• It destroys red blood cells, reducing oxygen supply to immune organs

• It targets and destroys white blood cells, reducing the body's ability to coordinate immune responses

• It produces toxins that block antibody production in B cells

• It causes the spleen to shrink, reducing the number of lymphocytes

An allergy is an abnormal, destructive immune response with effects that can range from annoying to deadly

• true

• false

What is an antigen?

• A protein produced by the immune system to fight infection

• A substance that triggers an immune response in the body

• A type of white blood cell that destroys pathogens

• A vaccine used to prevent disease

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

• antibody

• pathogen

• enzyme

• hormone

What type of immunity is a person born with, providing immediate but non-specific defense?

• Adaptive immunity

• Passive immunity

• Innate immunity

• Acquired immunity

The diagram below represents what can happen when homeostasis in an organism is threatened. Which statement provides a possible explanation for these events?

• Antibiotics break down harmful substances by the process of digestion.

• Some specialized cells mark and other cells engulf microbes during immune reactions.

• Embryonic development of essential organs occurs during pregnancy.

• Cloning removes abnormal cells produced during differentiation.

Which of the following best describes the process of phagocytosis?

• The production of antibodies by B cells and activation of T-Cells

• The engulfing and digestion of pathogens by immune cells

• The release of histamines during an allergic reaction

• The replication of viruses inside host cells

A student learns that passive immunity can be acquired naturally or artificially. Which of the following is an example of naturally acquired passive immunity?

• Receiving a flu vaccine

• A baby receiving antibodies through breast milk

• Receiving an injection of antibodies after a snake bite

• Recovering from chickenpox and developing memory cells