Question 1

What is the primary function of vaccines in the immune system?

Accepted Answer

To stimulate the immune system to recognize and fight pathogens

Answer

To provide immediate immunity

Answer

To cure existing infections

Answer

To directly kill pathogens

Question 2

Which type of immunity is developed after vaccination?

Accepted Answer

Acquired immunity

Answer

Innate immunity

Answer

Passive immunity

Answer

Natural immunity

Question 3

What is the role of adjuvants in vaccines?

Accepted Answer

To enhance the immune response to the vaccine

Answer

To replace the pathogen

Answer

To make the vaccine more palatable

Answer

To act as a preservative

Question 4

What is herd immunity?

Accepted Answer

A form of indirect protection that occurs when a large percentage of a population becomes immune to a disease

Answer

Immunity passed from mother to child

Answer

Immunity acquired from direct exposure to an infective agent

Answer

The body's immediate response to an invading pathogen

Question 5

What type of vaccine uses a weakened form of the pathogen?

Accepted Answer

Live attenuated vaccine

Answer

Inactivated vaccine

Answer

Subunit vaccine

Answer

mRNA vaccine

Question 6

What is the main purpose of the immune memory cells generated by vaccines?

Accepted Answer

To provide long-term protection against future infections

Answer

To eliminate all pathogens immediately

Answer

To serve as a food source for other immune cells

Answer

To produce antibodies only during the first infection

Question 7

Which immune response is primarily involved in fighting viral infections after vaccination?

Accepted Answer

Cell-mediated immunity

Answer

Inflammatory response

Answer

Humoral immunity

Answer

Adaptive immunity

Question 8

What is the main advantage of using mRNA vaccines?

Accepted Answer

They can be rapidly developed and produced

Answer

They do not require any storage conditions

Answer

They provide lifelong immunity with a single dose

Answer

They contain live viruses

Question 9

What is the primary role of antibodies produced in response to a vaccine?

Accepted Answer

To bind to pathogens and neutralize or mark them for destruction

Answer

To directly attack and kill pathogens

Answer

To increase the body's temperature

Answer

To enhance nutrient absorption

Question 10

What type of immunity is gained through the transfer of antibodies from mother to child?

Accepted Answer

Passive immunity

Answer

Natural immunity

Answer

Adaptive immunity

Answer

Active immunity

Question 11

What is the primary purpose of vaccines in the immune system?

Accepted Answer

To stimulate an immune response without causing the disease

Answer

To cure existing infections

Answer

To replace antibodies in the body

Answer

To directly kill pathogens

Question 12

What is the role of memory cells in the immune response?

Accepted Answer

They provide a faster and stronger response upon re-exposure to the same antigen

Answer

They help in the destruction of healthy cells

Answer

They initiate inflammation

Answer

They directly attack pathogens

Question 13

What type of vaccine uses weakened or inactivated forms of a virus or bacteria?

Accepted Answer

Live attenuated vaccine

Answer

Toxoid vaccine

Answer

mRNA vaccine

Answer

Subunit vaccine

Question 14

Which component of the immune system is primarily targeted by vaccines to produce an immune response?

Accepted Answer

Antigens

Answer

Antibodies

Answer

T cells

Answer

Pathogens

Question 15

What is the mechanism by which mRNA vaccines work?

Accepted Answer

They instruct cells to produce a protein that triggers an immune response

Answer

They directly provide antibodies to the body

Answer

They contain live pathogens that cause disease

Answer

They alter the DNA of human cells

Question 16

Which immune cells are primarily responsible for producing antibodies?

Accepted Answer

B cells

Answer

Macrophages

Answer

Dendritic cells

Answer

T cells

Question 17

What type of immunity is acquired through natural infection?

Accepted Answer

Natural immunity

Answer

Artificial immunity

Answer

Induced immunity

Answer

Passive immunity

Question 18

What role do memory T cells play in the immune system?

Accepted Answer

They provide long-term immunity by remembering past infections.

Answer

They produce antibodies immediately upon exposure.

Answer

They directly destroy invading pathogens.

Answer

They are responsible for phagocytosis of pathogens.

Question 19

What is the function of dendritic cells in the immune system?

Accepted Answer

They act as antigen-presenting cells that activate T cells.

Answer

They directly kill infected cells.

Answer

They produce antibodies to fight infections.

Answer

They secrete hormones to regulate immune response.

Question 20

What type of vaccine is composed of inactivated pathogens that cannot cause disease?

Accepted Answer

Inactivated vaccine

Answer

Conjugate vaccine

Answer

Recombinant vaccine

Answer

Live attenuated vaccine

Question 21

Which component of the immune system produces interferons that help combat viral infections?

Accepted Answer

Innate immune cells

Answer

T helper cells

Answer

B cells

Answer

Neutrophils

Question 22

What is a common side effect of vaccination?

Accepted Answer

Mild fever

Answer

Permanent disability

Answer

Immediate death

Answer

Chronic illness

Question 23

Which type of immunity is provided by maternal antibodies to an infant?

Accepted Answer

Passive immunity

Answer

Cell-mediated immunity

Answer

Active immunity

Answer

Artificial immunity

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