Immune System Quiz

What are the types of innate (non-specific) immunity?

• antimicrobial proteins

• natural killer cells

• phagocytosis

• external barriers

• inflammation

What responses belong to the first line of defense?

• external barriers

• antimicrobial proteins

What is the body's first line of defense?

(a)  

Antimicrobial proteins are

• proteins that inhibit the growth of microorganisms

• proteins that promote the growth of microorganisms

• proteins that have no effect on microorganisms

• proteins that are only found in plants

What responses belong to the second line of defense?

• phagocytosis

• natural killer cells

Which of the following are the 4 classic signs of inflammation?

• Redness, heat, swelling, pain

• Redness, heat, itching, pain

• Redness, cold, swelling, pain

• Redness, heat, swelling, numbness

Which of the following best describes the characteristics and significance of fever (pyrexia) in the immune response?

• Fever is a rise in body temperature that helps to speed up the immune response and inhibit the growth of pathogens.

• Fever is a decrease in body temperature that slows down the immune response.

• Fever has no significant role in the immune response.

• Fever is a rise in body temperature that only causes discomfort without any benefits.

What is the role of adaptive (specific or acquired) immunity in the body's defense mechanisms?

• It provides a non-specific response to pathogens.

• It involves the production of antibodies specific to pathogens.

• It acts as the first line of defense against infections.

• It includes physical barriers like skin and mucous membranes.

Define an antigen and its role in the immune response.

Antibodies are:

• Proteins that neutralize pathogens

• Cells that produce hormones

• Enzymes that digest food

• Lipids that store energy