Quiz Izz 5

Vaccines

• Inhibit the production of antibodies

• Stimulate the production of antibodies

• Inhibit the production of antigens

• Stimulate the production of antigens

Identify the molecule that triggers an immune response

• antigens

• antibodies

In allergic reaction, the immune systems responds to a

• usually harmless substance

• usually harmful substance

Which of the following is a pathogen that weakens the immune system over time?

• HIV

• AIDS

White blood cells flag and engulf pathogens when

• antigens are recognized

• antigens are not recognized

• antibodies are recognized

• antibodies are not recognized

Answer explanation

Be careful- the immune system responds when antigens are RECOGNIZED/identified!!!!!

Identify the contents of a vaccine that make it effective at stimulating immunity

• dead/weakened pathogen

• a small amount of pathogen

• antibodies

• antibiotics

Explain why a flu vaccine will not protect you against the measles virus.

• Flu virus and measles virus have different antigens

• Flu virus and measles virus have different antibodies

Why are antibodies specific?

• They work like a lock and key with antigens

• They work like a lock and key with other antibodies

• They work like a lock and key with antibiotics

The immune system is made of

• Red blood cells

• Nerve cells

• White blood cells

• Platelets

Some with AIDS is susceptible to infections by pathogens like the flu and tuberculosis because

• They have a weakened immune system

• They have too many white blood cells

• Antibody production is stimulated

• Antibiotics no longer function