Everyday Science 2137 MCQs [All-Courses]

• A false ceiling is a secondary ceiling hung below the main roof/ceiling.
• It is used for thermal insulation (heat control).
• Also provides sound insulation.

• The Muslim scientist is Ibn al-Nafis.
• He is credited with explaining the pulmonary circulation of blood and recognizing the contagious nature of diseases, centuries before these ideas became known in Europe.

• An earthquake is measured using a seismograph (also called a seismometer).
• It records the vibrations of the Earth caused by seismic waves during an earthquake.

• The pancreas is a gland located behind the stomach.
• It produces insulin and other hormones to regulate blood sugar and enzymes to help digest food.
• The pancreas plays a key role in both the digestive and endocrine systems.

• The mosquito carries the Plasmodium parasite, which enters the human bloodstream during a bite.
• Malaria cannot spread directly from person to person without a mosquito vector.

• Blood flows very slowly in capillaries to allow efficient exchange of oxygen, nutrients, and waste between blood and tissues.
• This slow speed is essential for proper functioning of the body’s cells.

• Ribosomes are tiny cell structures that make proteins.
• They read genetic instructions from RNA to assemble amino acids into proteins.
• Ribosomes are found in both plant and animal cells, either free in the cytoplasm or attached to the endoplasmic reticulum.

• Ronald Ross discovered that malaria is transmitted by mosquitoes in 1897.
• He showed that the Anopheles mosquito carries the malaria parasite from person to person.
• This discovery helped in controlling and preventing the spread of malaria.

• Urbanization is the process of people moving to cities and towns, leading to their growth.

It increases the demand for housing, roads, and infrastructure.

• Agriculture is the practice of growing crops and raising animals for food and resources.

It often requires clearing land, which can impact forests and natural habitats.

• Rising sea levels
• Extreme weather events like floods, storms, and heatwaves
• Melting glaciers and loss of biodiversity
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These effects result from long-term changes in temperature and weather patterns.