Human Health

Free sample questions

Human Health — sample Science questions with answers

1. Question 1

   Which of the following diseases is an example of a non-communicable disease?

   • ACholera
   • BCancer
   • CRingworm
   • DInfluenza

   Answer: B. Cancer

   Cancer is a non-communicable disease because it is not caused by a pathogen infection and cannot be transmitted from one individual to another. Instead, it arises from genetic or lifestyle factors.

2. Question 2

   Which of the following diseases is spread by the *Aedes* mosquito as a vector?

   • ADengue fever
   • BMalaria
   • CLeptospirosis
   • DCholera

   Answer: A. Dengue fever

   The *Aedes* mosquito is a vector that carries and transmits the dengue virus to humans through its bite.

3. Question 3

   Flood-affected areas are often associated with the spread of cholera. What type of pathogen causes this disease?

   • AInfluenza virus
   • BBacteria *Vibrio cholerae*
   • CFungus *Trichophyton*
   • DProtozoa *Plasmodium*

   Answer: B. Bacteria *Vibrio cholerae*

   Cholera is caused by the bacterium *Vibrio cholerae* which multiplies in water or food contaminated with human faeces.

4. Question 4

   Which part of the human body acts as the first line of defence physically to prevent the entry of pathogens?

   • ALymph nodes
   • BWhite blood cells
   • CSkin
   • DAntibodies

   Answer: C. Skin

   Human skin acts as the first physical line of defence, being tough and difficult for microorganisms to penetrate directly.

5. Question 5

   What is the name of the process that occurs when white blood cells engulf and digest pathogens in the body?

   • APhagocytosis
   • BNeutralisation
   • CAgglutination
   • DPrecipitation

   Answer: A. Phagocytosis

   Phagocytosis is the second line of defence mechanism in which white blood cells (phagocytes) surround, engulf, and digest pathogens using enzymes.