Human Health and Disease - Online Test

Q1. Skin in our body is an example of
Answer : Option B
Explaination / Solution:

Innate immunity is specific type of defense that is present at the time of birth. They provide different types of barrier to the entry of foreign elements. Skin in our body is main barrier which prevent entry of microbes in our body.

Q2. The first antibiotic was discovered by
Answer : Option D
Explaination / Solution:

Penicillin from fungus Penicilliumnotatum, the first true antibiotic, was discovered by Alexander Fleming, Professor of Bacteriology at St. Mary's Hospital in London in 1928.

Q3. The immunoglobulin abundant in colostrum is
Answer : Option C
Explaination / Solution:

Colostrum is the milk secreted by pregnant female after the delivery of baby. This milk contains immunoglobulin IgA that provide immunity to baby from several diseases.

Q4. Antigen binding site in an antibody is found between
Answer : Option B
Explaination / Solution:

The antigen-binding (Fab) fragment is a region on an antibody that binds to antigens. It is composed of one constant and one variable domain of each of the heavy and the light chain.

Q5. Antibodies in our body are complex
Answer : Option B
Explaination / Solution:

Antibodies in our body are present in the blood in form of glycoproteins. They produce antigens in response to foreign particles to provide immunity against the pathogen.

Q6. Where memory cells are formed?
Answer : Option D
Explaination / Solution:

Memory cells are formed in lymphocytes of WBC. Immunization against the particular disease based on the function of memory cell induced due to mild, heat killed pathogen administrated during immunization.

Q7. Which one of the following acts as a physiological barrier to the entry of microorganisms in human body?
Answer : Option C
Explaination / Solution:

Disease causing microorganism enters through different routes into the body. Physiological barrier prevent their entry. Tears acts as physiological barrier for entry of pathogen.

Q8. The growing immunity, after getting the disease free body
Answer : Option A
Explaination / Solution:

When a host is exposed to antigens, antibodies are produced in the host body. This type of immunity is called active immunity. Hence, growing immunity after getting the disease free body is active acquired immunity.

Q9. Which of the following provides physiological barrier as innate immunity?
Answer : Option B
Explaination / Solution:

Physiological barrier is a kind of innate immunity which prevents microbial growth in the body that causes infection. Acid in stomach kill the microbes that enters the alimentary canal along with food.

Q10. The primary and secondary immune response are carried out with the help of two special types of lymphocytes present in our blood called
Answer : Option A
Explaination / Solution:

T cells (thymus cells) and B cells (bone marrow- or bursa-derived cells) are the major cellular components of the adaptive immune response. T cells are involved in cell-mediated immunity, whereas B cells are primarily responsible for humoral immunity (relating to antibodies).