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What is the term that refers to the capacity of our bodies to protect against pathogens and other foreign objects?

A.

Defense mechanism

B.

Protection

C.

Infection

D.

Immunity

Answer and Explanation

The Correct Answer is D

A. Defense mechanism:

   This is a general term, not specific to the immune system's ability to protect.

B. Protection:

   Protection is a vague term and not the technical term used in this context.

C. Infection:

   Infection refers to the invasion and multiplication of pathogens, not the body’s ability to fight them.

D. Immunity:

   Immunity refers to the body’s specific ability to recognize, resist, and eliminate pathogens and foreign substances.


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Related Questions

Correct Answer is ["A","B","C","D"]

Explanation

A. Inhalation of an infectious pathogen

Respiratory droplets or airborne pathogens (e.g., influenza, tuberculosis) can be inhaled and cause infection.

B. Ingestion of an infectious pathogen

Infections like salmonella or norovirus are spread through contaminated food or water.

C. Contact with infected body fluids

Bloodborne pathogens like HIV and hepatitis B/C are spread via contact with infected fluids.

D. A bite by an infected "tiny animal"

Vector-borne transmission includes diseases spread by animals like mosquitoes (e.g., malaria, dengue) or ticks (e.g., Lyme disease).

E. Transmission of a defective gene from parent to child

This describes a genetic disorder, not an infectious disease.

Correct Answer is C

Explanation

A. Is secreted by all lymph nodes:

Thymosin is not produced by lymph nodes; it is secreted by the thymus gland.

B. Is the fluid within the lymph nodes:

Lymph fluid circulates within lymph nodes, not thymosin.

C. Is a hormone:

Thymosin is a hormone secreted by the thymus that plays a role in the development and differentiation of T lymphocytes.

D. Plays no known role:

Thymosin has an important role in immune system development.

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