Understanding Vaccines

The video explains how vaccines work by introducing weakened or dead pathogens to the body, which triggers an immune response without causing disease. This process helps the immune system produce antibodies and remember the pathogens for future protection, ensuring health by quickly fighting off similar pathogens if encountered again.

What is the primary role of vaccines in the human body?

• To cause extreme pain

• To provide nutrients

• To replace immune cells

• To train the body to fight pathogens

How do vaccines trigger an immune response?

• By increasing body temperature

• By causing a full-blown disease

• By using weakened or dead pathogens

• By using live pathogens

What do immune cells produce in response to vaccines?

• Vitamins

• Enzymes

• Antibodies

• Hormones

What is the benefit of the immune system recording information about pathogens?

• It increases energy levels

• It allows the body to remember and fight future infections

• It improves eyesight

• It helps in digestion

What happens when a similar pathogen enters the body in the future?

• The body becomes weaker

• The immune cells quickly recognize and fight it

• The immune system struggles to identify it

• The body ignores it