6.3.1 Types of Immunity

• What is the definition of immunity?

  Resistance to disease
• Adaptive immunity creates memory cells that enable a quicker and stronger response upon future encounters with the same antigen.
• Active immunity provides immediate and long-term protection.
• What is the main difference between active and passive immunity?

  Memory cells are present in active immunity only
• Match the source of immunity with the type of immunity:

  Body's own immune response ↔️ Active immunity

  External source ↔️ Passive immunity
• Order the characteristics of active immunity:

  1️⃣ Body's immune response

  2️⃣ Production of memory cells

  3️⃣ Long-term immunity
• Passive immunity is always induced by vaccination.

  False
• In passive immunity, memory cells are absent.
• What is an example of active immunity?

  Vaccination
• A newborn baby receives passive immunity from its mother's antibodies.
• A person who contracts an infection develops natural active immunity.
• Active immunity results in the production of memory cells
• Passive immunity provides long-term protection against pathogens.

  False
• Match the type of immunity with its source:

  Active immunity ↔️ Body's immune response

  Passive immunity ↔️ External source
• A newborn baby receives passive immunity from its mother's antibodies
• What is the primary function of immunity?

  Long-term resistance to disease
• Steps involved in the immune response when an antigen enters the body

  1️⃣ Immune cells identify and target the antigen

  2️⃣ Innate or adaptive response is initiated

  3️⃣ Memory cells are created
• Passive immunity involves the body producing its own antibodies.

  False
• Breastfeeding infants receive passive immunity from their mother's antibodies
• What is natural active immunity developed through?

  Natural infection
• Recovering from measles provides natural active immunity.
• How is artificial active immunity developed?

  Vaccination
• The source of exposure in artificial active immunity is vaccination
• Match the type of antibody transfer with its source:

  IgG ↔️ Placenta

  IgA ↔️ Breast milk
• What type of immunity does a newborn baby acquire through breast milk?

  Natural passive immunity
• Passive immunity provides protection through the transfer of pre-formed antibodies
• Passive immunity produces memory cells.

  False
• Give an example of natural active immunity.

  Recovering from measles
• Steps involved in developing artificial active immunity through vaccination

  1️⃣ Introduction of antigens

  2️⃣ Activation of immune cells

  3️⃣ Antibody production

  4️⃣ Formation of memory cells
• IgA antibodies are found in breast milk.
• Artificial passive immunity is acquired through immunoglobulin injections or serum transfer
• What is the primary purpose of artificial passive immunity?

  Immediate protection
• Match the condition with its treatment using artificial passive immunity:

  Tetanus ↔️ Tetanus antitoxin

  Snake bite ↔️ Anti-venom