SM Immunology & Host-Microbe Interactions

Question 1

Which immune cell is primarily responsible for producing antibodies?

Accepted Answer

B cells

Answer

B lymphocytes, also known as B cells, are responsible for producing antibodies to neutralize pathogens.

Question 2

Which class of immunoglobulin is the first to be produced in response to an infection?

Accepted Answer

IgM

Answer

IgM is the first antibody produced in an immune response and is important for early defense against infections.

Question 3

What is the function of the complement system in immunity?

Accepted Answer

Enhances pathogen clearance

Answer

The complement system enhances the ability of antibodies and immune cells to clear pathogens by promoting inflammation and cell lysis.

Question 4

Which type of immunity results from vaccination?

Accepted Answer

Active immunity

Answer

Active immunity develops after exposure to an antigen through infection or vaccination, leading to long-term protection.

Question 5

Which microorganism is capable of evading the immune system by antigenic variation?

Accepted Answer

Influenza virus

Answer

Pathogens such as influenza viruses undergo antigenic variation to escape immune recognition and establish infections.

(SM) Specialist in Microbiology Practice Test