Immunity - Innate and Acquired - Unsolved Practice Set
Chapter: Human Health and Disease | Topic: Immunity Innate and Acquired
IMMUNITY - INNATE AND ACQUIRED - UNSOLVED PRACTICE SET
Topic: Immunity Innate and Acquired
Multiple Choice Questions
Q1. Immunity refers to the body's overall ability to:
- Digest food efficiently
- Defend itself against disease-causing organisms and foreign substances
- Regulate body temperature only
- Produce hormones
Q2. Innate immunity is best described as:
- A highly specific defence that develops only after exposure to a particular pathogen
- A non-specific, inborn defence mechanism present in the body from birth
- A defence system found only in plants
- A defence mechanism acquired only through vaccination
Q3. Physical barriers such as the skin and mucous membranes are examples of:
- Acquired immunity
- Innate (physical) immunity
- Passive immunity only
- Active immunity only
Q4. Unlike innate immunity, acquired immunity is characterised by:
- A lack of specificity
- Specificity and immunological memory
- Being present from birth only
- Involving no white blood cells
Q5. Which of the following is an example of a cellular barrier involved in innate immunity?
- Antibodies produced after vaccination
- Phagocytic white blood cells such as neutrophils and macrophages
- Memory B cells
- Long-term antibody-secreting plasma cells
Short Answer Questions
Q6. Define immunity, in your own words.
Q7. Differentiate between innate immunity and acquired immunity.
Q8. Name any two physical barriers of innate immunity in the human body.
Q9. Why is acquired immunity described as having "memory," unlike innate immunity?
Long Answer Questions
Q10. Describe the different components of innate immunity - physical, physiological, cellular, and cytokine barriers - with suitable examples of each.
Q11. Explain how acquired immunity differs from innate immunity, discussing the significance of specificity and immunological memory in disease protection.
APPLICATION / ANALYSIS
Q12. A child gets chickenpox once in early childhood and, despite later exposure to infected classmates, does not contract the disease again. Explain, using your understanding of acquired immunity, why this long-term protection occurs.
Q13. A newborn baby, before its own immune system has fully developed specific defences, is still able to fight off many common infections due to certain non-specific protective mechanisms already present in the body. Explain which type of immunity is primarily responsible for this early protection, and why.