Q1. What role do T helper cells play in the immune response?
Solution:
T helper cells assist in activating B cells and cytotoxic T cells, playing a central role in coordinating the immune response.
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Q2. Which type of immune response is characterized by the production of antibodies?
Solution:
Humoral immunity is characterized by the production of antibodies by B cells in response to antigens.
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Q3. What is the primary function of B cells in the immune response?
Solution:
B cells are primarily responsible for the production of antibodies, which are crucial for the humoral immune response.
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Q4. Which of the following is a characteristic of adaptive immunity?
Solution:
Adaptive immunity is characterized by its memory and specificity, allowing for a tailored response to specific pathogens.
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Q5. Which cytokine is primarily involved in the activation of T cells?
Solution:
Interleukin-2 is crucial for T cell proliferation and activation, making it a key cytokine in the immune response.
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Q6. Which of the following is NOT a component of the innate immune system?
Solution:
Antibodies are part of the adaptive immune system, while macrophages, natural killer cells, and complement proteins are components of the innate immune system.
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Q7. What is the main purpose of the complement system?
Solution:
The complement system enhances phagocytosis and can directly lyse pathogens, playing a vital role in the immune response.
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Q8. What is the role of antigen-presenting cells (APCs) in the immune response?
Solution:
Antigen-presenting cells (APCs) process and present antigens to T cells, initiating the adaptive immune response.
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Q9. Which type of immunity is provided by vaccination?
Solution:
Vaccination stimulates the immune system to produce an active immune response, leading to the development of active immunity.
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Q10. What is the function of memory cells in the immune system?
Solution:
Memory cells are long-lived cells that remember past infections and enable a faster and more effective response upon re-exposure to the same pathogen.
