Immunity Practice Questions
Thanaweya Amma (Egypt) · Thanaweya Biology · 142 free MCQs with instant results and detailed explanations.
142
Total
37
Easy
74
Medium
31
Hard
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Sample Questions from Immunity
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the primary function of antibodies in the immune system?
A.
To destroy pathogens directly
B.
To identify and neutralize foreign substances
C.
To produce more white blood cells
D.
To transport oxygen in the blood
Show Answer & Explanation
Correct Answer: B
Antibodies are proteins produced by the immune system that specifically identify and neutralize foreign substances, such as pathogens, by binding to them and marking them for destruction by other immune cells.
Q2
Easy
Which cell type is primarily responsible for the production of antibodies?
A.
T cells
B.
B cells
C.
Macrophages
D.
Natural killer cells
Show Answer & Explanation
Correct Answer: B
B cells are the specific type of white blood cells that produce antibodies in response to antigens. They play a crucial role in the adaptive immune response by generating these proteins to target specific pathogens.
Q3
Easy
Which type of cells are primarily responsible for the adaptive immune response?
A.
B cells
B.
Red blood cells
C.
Platelets
D.
Neutrophils
Show Answer & Explanation
Correct Answer: A
B cells are crucial for the adaptive immune response as they produce antibodies that specifically target pathogens, unlike other cells listed.
Q4
Medium
Which type of immunity involves the activation of B cells and the production of antibodies?
A.
Cell-mediated immunity
B.
Humoral immunity
C.
Innate immunity
D.
Passive immunity
Show Answer & Explanation
Correct Answer: B
Humoral immunity is specifically associated with B cells producing antibodies to target antigens, distinguishing it from other types of immunity.
Q5
Medium
Which of the following factors can negatively affect the immune response?
A.
Regular exercise
B.
Balanced nutrition
C.
Chronic stress
D.
Adequate sleep
Show Answer & Explanation
Correct Answer: C
Chronic stress can weaken the immune response by increasing the production of stress hormones, which can impair immune function.
Q6
Medium
What is the primary function of T helper cells in the immune system?
A.
Killing infected cells
B.
Stimulating B cells to produce antibodies
C.
Suppressing immune responses
D.
Producing cytokines for inflammation
Show Answer & Explanation
Correct Answer: B
T helper cells play a crucial role in activating B cells, which is essential for the antibody-mediated response to pathogens.
Q7
Medium
Which type of immune response is characterized by a quicker reaction upon subsequent exposure to the same antigen?
A.
Primary response
B.
Secondary response
C.
Tertiary response
D.
Innate response
Show Answer & Explanation
Correct Answer: B
The secondary immune response is faster and more effective due to memory cells formed during the primary response, allowing for rapid antibody production.
Q8
Hard
Which type of immunity is primarily mediated by T lymphocytes and is crucial for defending against intracellular pathogens?
A.
Humoral immunity
B.
Cell-mediated immunity
C.
Passive immunity
D.
Innate immunity
Show Answer & Explanation
Correct Answer: B
Cell-mediated immunity is specifically carried out by T lymphocytes, which are essential in responding to intracellular pathogens such as viruses and some bacteria, making it the correct answer.
Q9
Hard
An individual receives an injection containing antibodies to a specific pathogen. What type of immunity does this exemplify?
A.
Active immunity
B.
Innate immunity
C.
Passive immunity
D.
Adaptive immunity
Show Answer & Explanation
Correct Answer: C
This scenario illustrates passive immunity, as the individual is receiving ready-made antibodies rather than producing them in response to an infection, hence it is the correct answer.
Q10
Hard
Which type of immunity is characterized by the production of antibodies after exposure to an antigen?
A.
Active Immunity
B.
Passive Immunity
C.
Innate Immunity
D.
Adaptive Immunity
Show Answer & Explanation
Correct Answer: A
Active immunity occurs when a person's immune system responds to an antigen by producing antibodies, which provides long-term protection against future infections by the same pathogen.
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Immunity — Thanaweya Amma (Egypt) Thanaweya Biology Practice Questions Online
This page contains 142 practice MCQs for the chapter Immunity in Thanaweya Amma (Egypt) Thanaweya Biology. The questions are organized by difficulty — 37 easy, 74 medium, 31 hard — so you can choose the right level for your preparation.
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