What is the main difference between active immunity and passive immunity?

What is contained in a vaccine?

Why is breast milk important for newborn babies in terms of immunity?

Which of the following is an example of natural active immunity?

What type of immunity is provided by an antivenom injection after a snake bite?

Explain how vaccination prevents disease.

Explain why passive immunity does not last as long as active immunity.

Explain the concept of herd immunity and how it protects unvaccinated individuals.

A person receives an injection of antibodies after being exposed to tetanus bacteria. State the type of immunity this provides and explain one disadvantage of this type of immunity.

Compare the primary immune response with the secondary immune response.

The graph shows antibody concentration in blood over time after first and second exposure to an antigen. Describe the difference in lag time between the primary and secondary response.

Compare the peak antibody concentration reached in the primary and secondary immune responses shown on the graph.

Describe the gradient (steepness) of the curve during antibody production in the secondary response compared to the primary response.

A student investigates the effect of vaccination by measuring antibody levels in blood samples over 6 months. State two variables that must be controlled in this investigation.

An investigation compares antibody levels in vaccinated and unvaccinated children. Suggest why this investigation raises ethical concerns.