Practice Life Science MCQs for KPPSC Assistant (BS-16) Everyday Science — topic-wise sets with solved answers.
Q1. What ailment is caused by the blockage of a blood vessel by a blood clot?
Answer: Thrombosis
Explanation: Thrombosis is the formation of a blood clot (thrombus) inside a blood vessel that obstructs blood flow; embolism involves a clot that has broken loose and travelled.
Q2. A biological study of the external form and structure of living organisms and their parts is called:
Answer: Morphology
Explanation: Morphology is the branch of biology concerned with the external form, shape, and structure of organisms and their parts, distinct from internal anatomy.
Q3. Identify the genetic & hereditary disease from the options.
Answer: Sickle-Cell Anemia
Explanation: Sickle-cell anemia is an autosomal recessive genetic disorder caused by a mutation in the HBB gene encoding the beta-globin chain of hemoglobin, making it hereditary.
Q4. What is the weight of the average adult human brain?
Answer: 1.2 to 1.4 kg
Explanation: The average adult human brain weighs approximately 1.4 to 1.6 kg (about 3 pounds), representing roughly 2% of total body weight.
Q5. Where are red blood cells formed?
Answer: Bone marrow
Explanation: Red blood cells (erythrocytes) are produced in the red bone marrow through a process called erythropoiesis, primarily in flat bones like the sternum, ribs, and vertebrae.
Q6. Which of these is a genetic & hereditary disease?
Answer: Diabetes Mellitus
Explanation: Diabetes mellitus has a strong genetic component; individuals with a family history of the disease face significantly higher risk, making it a hereditary condition.
Q7. Bird Flu virus is also known as:
Answer: H5N1
Explanation: H5N1 is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q8. Influenza A virus subtype H5N1 is also known as ______.
Answer: bird flu
Explanation: bird flu is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q9. Malaria is a disease that affects the ____.
Answer: Spleen and liver
Explanation: Malaria parasites (Plasmodium) multiply in red blood cells and are also sequestered in the spleen and liver, causing fever, anemia, and organ damage.
Q10. Pneumonia is an inflammation of the lungs as a result of bacteria named:
Answer: Streptococcus
Explanation: Streptococcus is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q11. What is the disease pertussis commonly known as?
Answer: Whooping cough
Explanation: Pertussis, caused by the bacterium Bordetella pertussis, is characterized by severe coughing fits followed by a high-pitched "whoop" on inhalation, giving it the common name whooping cough.
Q12. Which area of the brain is responsible for the control of body temperature?
Answer: Hypothalamus
Explanation: The hypothalamus acts as the body's thermostat, detecting blood temperature changes and regulating heat production, sweating, and shivering to maintain core body temperature.
Q13. A non-communicable disease is also called a:
Answer: Chronic disease
Explanation: A non-communicable disease (NCD) is also called a chronic disease because it persists over a long period and typically progresses slowly, unlike infectious diseases.
Q14. A blood group is identified by:
Answer: Antigens
Explanation: Antigens is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q15. Which among the following is responsible for the clotting of blood?
Answer: Platelets
Explanation: Platelets (thrombocytes) are small cell fragments that aggregate at wound sites and initiate the coagulation cascade, forming clots to stop bleeding.
Q16. Insects responsible for transmitting diseases are called:
Answer: Vectors
Explanation: Vectors is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q17. ______ is the clear, yellowish fluid portion of blood from which clotting factors have been removed.
Answer: Serum
Explanation: Serum is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q18. Which one of the following is known as the 'brain of the computer'?
Answer: Control unit
Explanation: Control unit is the scientifically accurate choice. The concept tested here is core everyday science for MDCAT, ECAT, and general ability papers.
Q19. In the human eye, the light-sensitive layer made of specialized nerve cells (rods and cones) is called the ______.
Answer: retina
Explanation: The retina is the light-sensitive inner lining of the eye containing photoreceptor cells - rods (for low-light vision) and cones (for color and detail) - that convert light into nerve signals.
Q20. Which of the following protects the body against infectious diseases and foreign invaders?
Answer: Leukocytes
Explanation: Leukocytes (white blood cells) are the primary cellular components of the immune system; they identify and destroy pathogens, foreign cells, and abnormal body cells.
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